ILab yeziXhobo zeSizweVIEW Unxibelelwano 802.11 Isakhelo seSicelo 2.1

Ulwazi lweMveliso: PXIe-8135

I-PXIe-8135 sisixhobo esisetyenziselwa ukuhanjiswa kwedatha ye-bidirectional kwiLebhuVIEW Unxibelelwano 802.11 Isakhelo seSicelo 2.1. Isixhobo sifuna izixhobo ezimbini ze-NI RF, nokuba yi-USRP
Izixhobo ze-RIO okanye iimodyuli zeFlexRIO, kufuneka ziqhagamshelwe kwiikhompyuter ezahlukeneyo zokusingatha, ezinokuthi zibe ziilaptops, iiPC, okanye i-PXI chasses. Ukuseta kunokusebenzisa iintambo zeRF okanye ii-eriyali. Isixhobo sihambelana ne-PXI-based host host systems, i-PC ene-PCI-based okanye i-PCI Express-based based adapter MXI, okanye i-laptop ene-Express card-based MXI adapter. Inkqubo yokusingatha kufuneka ibe ne-20 GB ye-disk space yamahhala kunye ne-16 GB ye-RAM.

IiMfuno zeNkqubo

Isoftware

• Windows 7 SP1 (64-bit) okanye Windows 8.1 (64-bit)
• ILabVIEW Uyilo lweNkqubo yoNxibelelwano Suite 2.0
• 802.11 Isakhelo seSicelo 2.1

Hardware

Ukusebenzisa i-802.11 Application Framework yogqithiso lwedatha ye-bidirectional, udinga izixhobo ezibini ze-NI RF–izixhobo ze-USRP RIO ezino-40 MHz, 120 MHz, okanye 160 MHz bandwidth, okanye iimodyuli zeFlexRIO. Izixhobo kufuneka ziqhagamshelwe kwiikhompyuter ezahlukeneyo zokusingathwa, ezinokuba ziilaptops, iiPC, okanye i-PXI chassis. Umzobo 1 ubonisa ukusetwa kwezitishi ezibini mhlawumbi ngokusebenzisa iintambo zeRF (ekhohlo) okanye i-eriyali (ekunene).
Itheyibhile 1 ibonisa ihardware efunekayo ngokuxhomekeke kubumbeko olukhethiweyo.

Uqwalaselo	Zombini ukuseta				Ukuseta i-USRP RIO		Ukuseta imodyuli ye-FlexRIO FPGA/FlexRIO RF
	Umamkeli PC	I-SMA Intambo	Umncedi	I-antenna	USRP isixhobo	MXI Iadaptha	FlexRIO FPGA imodyuli	Iadaptha yeFlexRIO imodyuli
Izixhobo ezibini, ezinentambo	2	2	2	0	2	2	2	2
Izixhobo ezibini, ngaphezulu- umoya [1]	2	0	0	4	2	2	2	2

• Abalawuli: Kuyacetyiswa—i-PXIe-1085 Chassis okanye i-PXIe-1082 Chassis enePXIe-8135 Controller efakiweyo.
• Intambo ye-SMA: Intambo yowesifazane/yomfazi efakwe kwisixhobo se-USRP RIO.
• I-Antenna: Jonga kwi-"RF Multi Station Mode: Over-the-Air Transmission" icandelo ngolwazi oluthe kratya malunga nale ndlela.
• Isixhobo se-USRP RIO: I-USRP-2940/2942/2943/2944/2950/2952/2953/2954 I-Software echazwe kwiRadio yeZixhobo eziHlaziyiweyo ezine-40 MHz, 120 MHz, okanye i-160 MHz bandwidth.
• I-Attenuator ene-30 dB attenuation kunye nezixhumi ze-SMA zesilisa/semazi ezibandakanywe nesixhobo se-USRP RIO.
  Qaphela: Ukuseta imodyuli ye-adapter ye-FlexRIO/FlexRIO, i-attenuator ayifuni.
• Imodyuli yeFlexRIO FPGA: PXIe-7975/7976 FPGA Imodyuli yeFlexRIO
• Imodyuli ye-adapter ye-FlexRIO: I-NI-5791 i-RF Adapter Module ye-FlexRIO

Izindululo ezandulelayo zithatha ukuba usebenzisa iisistim zomamkeli ezisekwe kwi-PXI. Ungasebenzisa kwakhona i-PC ene-PCI-based okanye i-PCI Express-based MXI iadaptha, okanye i-laptop ene-Express card-based adapter ye-MXI.
Qinisekisa ukuba umphathi wakho une-20 GB ye-disk space yamahhala kunye ne-16 GB ye-RAM.

• Isilumkiso: Phambi kokuba usebenzise izixhobo zakho zekhompyutha, funda onke amaxwebhu emveliso ukuqinisekisa ukuthotyelwa kokhuseleko, i-EMC, kunye nemigaqo yokusingqongileyo.
• Isilumkiso: Ukuqinisekisa ukusebenza kwe-EMC echaziweyo, sebenzisa izixhobo zeRF kuphela ngeentambo ezikhuselekileyo kunye nezixhobo.
• Isilumkiso: Ukuqinisekisa ukusebenza okuchaziweyo kwe-EMC, ubude bazo zonke iintambo ze-I/O ngaphandle kwezo ziqhagamshelwe kwigalelo le-eriyali ye-GPS yesixhobo se-USRP kufuneka bungabi ngaphezu kwe-3 m (10 ft.).
• Isilumkiso: Izixhobo ze-USRP RIO kunye ne-NI-5791 RF azivunyelwanga okanye zinelayisensi yokuhanjiswa emoyeni usebenzisa i-antenna. Ngenxa yoko, ukusebenzisa le mveliso nge-eriyali kunokwaphula imithetho yendawo. Qinisekisa ukuba uyayithobela yonke imithetho yasekhaya phambi kokuba usebenzise le mveliso nge-eriyali.

Uqwalaselo

• Izixhobo ezibini, ezinentambo
• Izixhobo ezibini, emoyeni [1]

Iinketho zoLungiselelo lweHardware

Itheyibhile yoku-1 efunekayo izixhobo ze-Hardware

Izincedisi	Zombini ukuseta	Ukuseta i-USRP RIO
Intambo ye-SMA	2	0
I-Antenna yomqhubi	2	0
Isixhobo se-USRP	2	2
Iadaptha yeMXI	2	2
Imodyuli yeFlexRIO FPGA	2	N / A
Imodyuli ye-Adapter yeFlexRIO	2	N / A

Imiyalelo yokusetyenziswa kwemveliso

1. Qinisekisa ukuba onke amaxwebhu emveliso afundiwe kwaye aqondwa ukuqinisekisa ukuthotyelwa kokhuseleko, i-EMC, kunye nemimiselo yokusingqongileyo.
2. Qinisekisa ukuba izixhobo zeRF ziqhagamshelwe kwiikhompyuter ezahlukeneyo ezihlangabezana neemfuno zenkqubo.
3. Khetha inketho yoqwalaselo lwehardware efanelekileyo kwaye usete izincedisi ezifunekayo ngokweTheyibhile 1.
4. Ukuba usebenzisa i-eriyali, qinisekisa ukuthotyelwa kwayo yonke imithetho yasekuhlaleni phambi kokuba usebenzise le mveliso nge-eriyali.
5. Ukuqinisekisa ukusebenza kwe-EMC echaziweyo, sebenzisa izixhobo zeRF kuphela ngeentambo ezikhuselekileyo kunye nezixhobo.
6. Ukuqinisekisa ukusebenza kwe-EMC echaziweyo, ubude bazo zonke iintambo ze-I/O ngaphandle kwezo ziqhagamshelwe kwigalelo le-eriyali ye-GPS yesixhobo se-USRP kufuneka bungabi ngaphezu kwe-3 m (10 ft.).

Ukuqonda Amacandelo ale Sample projekthi

Le projekthi yenziwa yiLebhuVIEW ikhowudi yokusingatha kunye neLebhuVIEW Ikhowudi yeFPGA yeethagethi zehardware ye-USRP RIO okanye iFlexRIO exhaswayo. Ulwakhiwo lwefolda enxulumeneyo kunye namacandelo eprojekthi achazwe kumacandelwana alandelayo.

Ulwakhiwo lwesiqulathi seefayili
Ukwenza umzekelo omtsha we-802.11 Application Framework, qalisa iLebhuVIEW Uyilo lweNkqubo yoNxibelelwano Suite 2.0 ngokukhetha iLebhuVIEW Unxibelelwano 2.0 ukusuka kwimenyu yokuQala. Ukusuka kwiSakhelo seProjekthi kwithebhu yeProjekthi eqalisiwe, khetha iSakhelo seSicelo. Ukuqalisa iprojekthi, khetha:

• 802.11 Yila i-USRP RIO v2.1 xa usebenzisa izixhobo ze-USRP RIO
• 802.11 Uyilo lweFlexRIO v2.1 xa usebenzisa iimodyuli zeFlexRIO FPGA/FlexRIO
• I-802.11 Ukulinganisa i-v2.1 ukuqhuba ikhowudi ye-FPGA ye-transmitter yomzimba (TX) kunye ne-receiver (RX) yokucwangcisa umqondiso kwimodi yokulinganisa. Isikhokelo esihambelanayo seprojekthi yokulinganisa iqhotyoshelwe kuyo.

Kwi-802.11 iiprojekthi zoYilo, oku kulandelayo files kunye neefolda zenziwe ngaphakathi kwesiqulathi seefayili esikhankanyiweyo:

• 802.11 Yila i-USRP RIO v2.1.lvproject / 802.11 Uyilo lweFlexRIO RIO v2.1.lvproject —Le projekthi file iqulethe ulwazi malunga nee-subVIs ezidityanisiweyo, iithagethi kunye nemigaqo yokwakha.
• I-802.11 Host.gvi-Lo mququzeleli wezinga eliphezulu VI usebenzisa isikhululo se-802.11. Umamkeli ujongana nentwanafile ukwakha ukusuka kwinqanaba eliphezulu le-FPGA VI, i-802.11 FPGA STA.gvi, ebekwe kwisiqulathi seefayili ezithile ekujoliswe kuso.
• Ulwakhiwo-Olu lawulo luqulathe intwana ebihlanganiswe kwangaphambilifiles kwisixhobo esikhethiweyo setekeni.
• Common-Ithala leencwadi eliqhelekileyo liqulathe ii-subVIs eziqhelekileyo zomamkeli kunye neFPGA ezisetyenziswa kwi-802.11 Application Framework. Le khowudi ibandakanya imisebenzi yezibalo kunye noguqulelo lweentlobo.
• I-FlexRIO/USRP RIO— Ezi folda ziqulethe ukuphunyezwa okujoliswe kuko komkhosi kunye ne-FPGA subVIs, equka ikhowudi yokuseta inzuzo kunye nokuphindaphinda. Le khowudi kwiimeko ezininzi iguqulelwe kwithagethi ethile yostrimisho sampiiprojekthi. Zikwaqulathe i-FPGA VIs ekujoliswe kuyo ekujoliswe kuyo.
• 802.11 v2.1—Le folda iquka umsebenzi we-802.11 ngokwawo owahlulwe kwiifolda ezininzi zeFPGA kunye nolawulo lomkhosi.

Amacandelo
I-802.11 Application Framework ibonelela ngexesha langempela le-orthogonal frequency-division multiplexing (OFDM) umaleko womzimba (PHY) kunye nolawulo lokufikelela kwimidiya (MAC) ukuphunyezwa kwe-IEEE 802.11-based system. ILebhu yeNkqubo-sikhokelo yeSicelo ye-802.11VIEW iprojekthi iphumeza ukusebenza kwesikhululo esinye, kubandakanywa ummkeli (RX) kunye nomsebenzi we-transmitter (TX).

Ingxelo yokuThobela nokuTenxa
I-802.11 Application Framework yenzelwe ukuhambelana neenkcukacha ze-IEEE 802.11. Ukugcina uyilo luguquguquka lula, iSakhelo seSicelo se-802.11 sigxile ekusebenzeni okuphambili kwe-IEEE 802.11 standard.

• 802.11a- (imowudi yelifa) kunye ne-802.11ac- (imowudi yokuPhumeza ePhezulu kakhulu) iyahambelana ne-PHY
• Ukufunyanwa kwepakethi esekwe kwibala loqeqesho
• Umqondiso kunye nokufakwa kweekhowudi kwibala ledatha
• Sula uVavanyo lweChaneli (CCA) olusekwe kumandla kunye nokufumanisa umqondiso
• Umthwali wengqondo yokufikelela kaninzi ngokuthintela ukungqubana (CSMA/CA) inkqubo equka ukuhanjiswa kwakhona
• Inkqubo yokubuyela umva ngokungahleliwe
• I-802.11a kunye ne-802.11ac amacandelo ahambelana ne-MAC ukuxhasa isicelo-ukuthumela / ukucaca-ukuthumela (RTS / CTS), isakhelo seDatha, kunye nokuvuma (ACK) ukuhanjiswa kwefreyimu
• Isizukulwana se-ACK nge-802.11 IEEE-ithobela isithuba esifutshane se-interframe (SIFS) ixesha (16 µs)
• Inkxaso yeVector yolwabiwo lwenethiwekhi (NAV).
• Iyunithi yedatha yeprotocol ye-MAC (MPDU) ukuveliswa kunye nedilesi yee-multi-node
• I-L1/L2 API evumela usetyenziso lwangaphandle oluphumeza imisebenzi ephezulu ye-MAC njengenkqubo yokudibanisa ukufikelela kwimisebenzi ye-MAC ephakathi nasezantsi.
  I-802.11 Application Framework ixhasa ezi mpawu zilandelayo:
• Ithuba elide lokulinda kuphela
• Igalelo elinye imveliso enye (SISO) uyilo, ilungele igalelo-imveliso ezininzi (MIMO) uqwalaselo
• I-VHT20, VHT40, kunye ne-VHT80 yomgangatho we-802.11ac. Kwi-802.11ac 80 MHz bandwidth, inkxaso inqunyelwe ukuya kwimodulation kunye ne-coding scheme (MCS) inombolo yesi-4.
• I-MPDU edibeneyo (A-MPDU) ene-MPDU enye yomgangatho we-802.11ac
• Ipakethe-nge-pakethe yolawulo lokuzuza oluzenzekelayo (AGC) evumela ukuhanjiswa kunye nolwamkelo ngaphezulu emoyeni.

Ndwendwela ni.com/info kwaye ufake iKhowudi yoLwazi 80211AppFWManual ukufikelela kwiLebhuVIEW Unxibelelwano 802.11 Incwadi yesiKhokelo seSicelo ngolwazi oluthe kratya malunga noyilo lwe-802.11 yeSikhokelo seSicelo.

Ukuqhuba le Sample projekthi

I-802.11 Application Framework ixhasa unxibelelwano nenani lezikhululo ezingenamqathango, ezibizwa emva koku njenge-RF Multi Station Mode. Ezinye iindlela zokusebenza zichazwe kwicandelo elithi "Iindlela zokuSebenza ezongezelelweyo kunye noKhetho loLungiselelo". Kwi-RF Multi Station Mode, isitishi ngasinye sisebenza njengesixhobo esinye se-802.11. Ezi nkcazo zilandelayo zithatha ukuba kukho izitishi ezibini ezizimeleyo, ngasinye sisebenza ngesixhobo saso seRF. Zibizwa ngokuba sisitishi A kunye neSikhululo B.

Ukuqwalasela i-Hardware: Intambo
Ngokuxhomekeke kuqwalaselo, landela amanyathelo kwindawo ethi "Ukuqwalasela i-USRP RIO Setup" okanye "Ukuqwalasela i-FlexRIO/FlexRIO Ukusetwa kweModyuli ye-Adapter".

Ukuqwalasela i-USRP RIO System

1. Qinisekisa ukuba izixhobo ze-USRP RIO ziqhagamshelwe ngokufanelekileyo kwiisistim zenginginya eziqhuba iLabVIEW Inkqubo yoYilo loNxibelelwano Suite.
2. Gqibezela la manyathelo alandelayo ukwenza uqhagamshelo lweRF njengoko kubonisiwe kuMfanekiso 2.
   1.  Qhagamshela izithinteli ezimbini ze-30 dB kwizibuko le-RF0/TX1 kwiSikhululo A kunye neSikhululo B.
   2. Qhagamshela elinye isiphelo se-attenuators kwiintambo ezimbini zeRF.
   3. Qhagamshela elinye icala lentambo ye-RF evela kwiSikhululo A ukuya kwi-RF1/RX2 kwizibuko lesiKhululo B.
   4. Qhagamshela elinye icala lentambo ye-RF evela kwiSikhululo B ukuya kwi-RF1/RX2 kwizibuko lesiKhululo A.
3. Amandla kwizixhobo ze-USRP.
4. Amandla kwiinkqubo zokusingatha.
   Iintambo zeRF kufuneka zixhase ubuninzi bokusebenza.

Ukuqwalasela iFlexRIO System

1. Qinisekisa ukuba izixhobo zeFlexRIO ziqhagamshelwe ngokufanelekileyo kwiisistim zenginginya eziqhuba iLabVIEW Inkqubo yoYilo loNxibelelwano Suite.
2. Gqibezela la manyathelo alandelayo ukwenza uqhagamshelo lweRF njengoko kubonisiwe kuMfanekiso 3.
   1. Qhagamshela izibuko le-TX leSikhululo A ukuya kwizibuko le-RX leSikhululo B usebenzisa intambo yeRF.
   2. Qhagamshela izibuko le-TX leSikhululo B ukuya kwizibuko le-RX leSikhululo A usebenzisa intambo ye-RF.
3. Amandla kwiinkqubo zokusingatha.
   Iintambo zeRF kufuneka zixhase ubuninzi bokusebenza.

Ukuqhuba iLebhuVIEW Ikhowudi yomamkeli

Qinisekisa iLebhuVIEW UYilo lweNkqubo yoNxibelelwano Suite 2.0 kunye ne-802.11 Application Framework 2.1 zifakwe kwiisistim zakho. Ufakelo luqalwa ngokusebenzisa setup.exe kwisixhobo sofakelo olunikiweyo. Landela imiyalelo yomfaki ukugqiba inkqubo yokuhlohla.
Amanyathelo afunekayo okuqhuba iLebhuVIEW ikhowudi yokusingatha kwizikhululo ezibini zishwankathelwa koku kulandelayo:

1. KwiSitishi A kumamkeli wokuqala:
   • a. Qalisa iLebhuVIEW INkqubo yoNxibelelwano yoYilo Suite ngokukhetha iLebhuVIEW Unxibelelwano 2.0 ukusuka kwimenyu yokuQala.
   • b. Ukusuka kwi-PROJECTS ithebhu, khetha iiNkqubo zeSicelo » 802.11 Uyilo… ukuqalisa iprojekthi.
     • Khetha 802.11 Yila i-USRP RIO v2.1 ukuba usebenzisa ukuseta i-USRP RIO.
     • Khetha 802.11 Design FlexRIO v2.1 ukuba usebenzisa ukuseta FlexRIO.
   • c. Ngaphakathi kwaloo projekthi, i-host-level host VI 802.11 Host.gvi ibonakala.
   • d. Qwalasela isazisi seRIO kulawulo lweSixhobo seRIO. Unokusebenzisa uMlinganiselo we-NI kunye ne-Automation Explorer (MAX) ukufumana isichongi seRIO kwisixhobo sakho. I-bandwidth yesixhobo se-USRP RIO (ukuba i-40 MHz, i-80 MHz, kunye ne-160 MHz) ichongiwe ngokwendalo.
2. Phinda inyathelo loku-1 kwisitishi B kumamkeli wesibini.
3. Misela iNombolo yesiKhululo A ukuya ku-1 kunye nesesiKhululo B ukuya ku-2.
4. Ukuseta iFlexRIO, seta iClock yeReferensi ibe yiPXI_CLK okanye REF IN/ClkIn.
   • a. Ye-PXI_CLK: Isalathiso sithathwe kwi-PXI chassis.
   • b. I-REF IN/ClkIn: Isalathiso sithathwe kwi-ClkIn port ye-NI-5791 ye-adapter module.
5. Lungisa ngokufanelekileyo useto lweDilesi ye-MAC yeSixhobo kunye nedilesi ye-MAC yokufikela kuzo zombini izitishi.
   • a. Isitishi A: Misela idilesi ye-MAC yeSixhobo kunye nedilesi ye-MAC yokuFikela ku-46:6F:4B:75:6D:61 kunye no-46:6F:4B:75:6D:62 (amaxabiso angagqibekanga).
   • b. Isitishi B: Misela idilesi ye-MAC yeSixhobo kunye nedilesi ye-MAC yokufikela ku-46:6F:4B:75:6D:62 kunye no-46:6F:4B:75:6D:61.
6. Kwisikhululo ngasinye, sebenzisa iLebhuVIEW host VI ngokunqakraza iqhosha lokubaleka ( ).
   • a. Ukuba uphumelele, isalathisi sokuLungela isiXhobo sikhanyisa.
   • b. Ukuba ufumana impazamo, zama enye yezi zilandelayo:
     • Qinisekisa ukuba isixhobo sakho siqhagamshelwe kakuhle.
     • Jonga uqwalaselo lwesixhobo seRIO.
7. Yenza iSitishi A sisebenze ngokuseta Ulawulo Lwesikhululo luVumele. Isalathisi esisebenzayo kufuneka sivulwe.
8. Yenza isitishi B sisebenze ngokuseta i-Vulse isitishi solawulo ku-On. Isalathisi esisebenzayo kufuneka sivulwe.
9. Khetha isithuba seMAC, kwaye uqinisekise iRX Constellation ebonisiweyo ihambelana nemodyuli kunye neskim sokhowudi esiqwalaselwe kusetyenziswa iMCS kunye neSubcarrier Format parameters kwesinye isitishi. Umzekeloample, shiya ifomathi ye-Subcarrier kunye ne-MCS ukungagqibeki kwiSikhululo A kwaye usete ifomati ye-Subcarrier ukuya ku-40 MHz (IEEE 802.11 ac) kunye ne-MCS ukuya ku-5 kwiSikhululo B. I-16-quadrature ampi-litude modulation (QAM) isetyenziselwa i-MCS 4 kwaye yenzeka kujongano lomsebenzisi weSikhululo B. I-64 QAM isetyenziselwa i-MCS 5 kwaye yenzeka kujongano lomsebenzisi weSikhululo A.
10. Khetha i-RF & PHY isithuba, kwaye uqinisekise i-RX Power spectrum ebonisiweyo iyafana nefomati ye-Subcarrier ekhethiweyo kwesinye isitishi. Isitishi A sibonisa i-40 MHz RX i-spectrum yamandla ngelixa iSikhululo B sibonisa i-20 MHz RX i-spectrum yamandla.

Phawula: Izixhobo ze-USRP RIO ezine-40 MHz bandwidth azikwazi ukuthumela okanye ukufumana iipakethi ezifakwe kwiikhowudi kunye ne-80 MHz bandwidth.
I-802.11 Application Framework ujongano lomsebenzisi weSitishi A no-B ziboniswe kuMfanekiso 6 kunye noMzobo 7, ngokulandelelanayo. Ukubeka iliso kwisimo sesikhululo ngasinye, i-802.11 Application Framework ibonelela ngeendlela ezahlukeneyo zezalathisi kunye neegrafu. Zonke izicwangciso zesicelo kunye neegrafu kunye nezalathi zichazwe kula macandelwana alandelayo. Ulawulo kwiphaneli yangaphambili luhlelwe ngokwezi seti zintathu zilandelayo:

• Izicwangciso zesicelo: Olo lawulo kufuneka lusetwe phambi kokuba uvule isitishi.
• Iisetingi Zexesha Lokusebenza elizinzileyo: Ezo zilawuli kufuneka zicinywe emva koko kwisikhululo. Ulawulo lwesitishi se-Vulela lusetyenziselwa oko.
• Imimiselo yeXesha lokuSebenza eliDynamic: Olo lawulo lunokusetwa apho isitishi sisebenza khona.

Inkcazo yoLawulo kunye neZalathi

Ulawulo olusisiseko kunye neZalathi

Izicwangciso zosetyenziso 
Izicwangciso zesicelo zisetyenziswa xa i-VI iqala kwaye ayinakuguqulwa xa i-VI ivuliwe kwaye isebenza. Ukutshintsha ezi zicwangciso, yeka i-VI, sebenzisa utshintsho, kwaye uqalise kwakhona i-VI. Ziboniswe kuMfanekiso wesi-6.

Ipharamitha	Inkcazo
I-RIO Isixhobo	Idilesi ye-RIO yesixhobo se-RF hardware.
Isalathiso Ikloko	Qwalasela ireferensi yeewotshi zesixhobo. Ubuninzi bereferensi kufuneka bube yi-10 MHz. Unokukhetha kwimithombo elandelayo: Ngaphakathi—Usebenzisa iwotshi yereferensi yangaphakathi. I-REF IN / ClkIn-Ireferensi ithathwe kwi-REF IN port (USRP-294xR, kunye ne-USRP-295XR) okanye i-ClkIn port (NI 5791). IGPS—Ireferensi ithathwe kwimodyuli yeGPS. Isebenza kuphela kwizixhobo ze-USRP- 2950/2952/2953. PXI_CLK-Ireferensi ithathwe kwi-chassis ye-PXI. Isebenza kuphela kwiithagethi ze-PXIe- 7975/7976 ezineemodyuli ze-adapter ye-NI-5791.
Ukusebenza Imowudi	Ibekwe njengesigxina kwi-block diagram. I-802.11 Application Framework ibonelela ngezi ndlela zilandelayo: RF Loopback—Iqhagamshela indlela ye-TX yesixhobo esinye kunye ne-RX yesixhobo esifanayo usebenzisa i-RF cabling okanye usebenzisa i-eriyali. RF Zininzi Isitishi-Ukuhanjiswa kwedatha rhoqo kunye nezikhululo ezizimeleyo ezibini nangaphezulu ezisebenza kwisixhobo ngasinye esiqhagamshelwe ngee-eriyali okanye ngoqhagamshelo ngeentambo. I-RF Multi Station yindlela yokusebenza engagqibekanga. Baseband loopback-Ifana ne-RF loopback, kodwa i-loopback yentambo yangaphandle ithatyathelwe indawo yi-digital baseband loopback indlela.

Imimiselo yeXesha lokuSebenza engatshintshiyo
Iisetingi zexesha lokusebenza ezizinzileyo zingatshintshwa kuphela ngelixa isitishi sicinyiwe. Iiparamitha zisetyenziswa xa isikhululo sivuliwe. Ziboniswe kuMfanekiso wesi-6.

Ipharamitha	Inkcazo
Isitishi Inani	Ulawulo lwamanani ukuseta inombolo yesitishi. Isikhululo ngasinye esibalekayo kufuneka sibe nenani elahlukileyo. Inokufikelela kwi-10. Ukuba umsebenzisi angathanda ukwandisa inani lezikhululo ezibalekayo, i-cache ye-MSDU Sequence Number assignment and Duplicate Detection kufuneka inyuswe ukuya kwixabiso elifunekayo, ekubeni ixabiso elimiselweyo ngu-10.
Amabanga aphantsi Umjelo Iziko Ukuphindaphinda [Hz]	Yeyona ndawo iphambili yeziko lejelo losasazo kwi-Hz. Amaxabiso asebenzayo axhomekeke kwisixhobo isitishi esisebenza kuso.
Amabanga aphantsi Umjelo Umkhethi	Ulawulo lwamanani ukumisela ukuba yeyiphi i-subband esetyenziswayo njengejelo eliphambili. I-PHY igubungela i-80 MHz i-bandwidth, enokuthi yohlulwe ibe yi-subbands ezine {0,…, 3} ye-20 MHz i-bandwidth ye-non-high throughput (non-HT) isignali. Kwii-bandwidths ezibanzi ii-subbands ziyadityaniswa. Ndwendwela ni.com/info kwaye ufake iKhowudi yoLwazi 80211AppFWManual ukufikelela kwi ILabVIEW Unxibelelwano 802.11 Isicelo Isakhelo Imanyuwali ngolwazi oluthe kratya malunga nokusasaza.
Amandla Inqanaba [dBm]	Umgangatho wamandla ophumayo uqwalasela ukuhanjiswa komqondiso wamaza oqhubekayo (CW) onedijithali epheleleyo ukuya kwisiguquli se-analog (DAC). Umlinganiselo ophezulu wepeak-to-avareji wamandla we-OFDM uthetha ukuba amandla okukhutshwa kweefreyimu ezigqithisiweyo ze-802.11 zihlala ziyi-9 dB ukuya kwi-12 dB ngaphantsi komgangatho wamandla ohlengahlengisiweyo.
TX RF Izibuko	Izibuko leRF esetyenziselwa iTX (isebenza kuphela kwizixhobo ze-USRP RIO).
RX RF Izibuko	Izibuko le-RF elisetyenziselwa i-RX (isebenza kuphela kwizixhobo ze-USRP RIO).
Isixhobo IMAC Idilesi	Idilesi ye-MAC enxulumene nesitishi. Isalathisi esiBoolean sibonisa ukuba idilesi enikiweyo ye-MAC iyasebenza na okanye hayi. Ukuqinisekiswa kwedilesi ye-MAC kwenziwa kwimo eguquguqukayo.

Imimiselo yeXesha lokuSebenza eliDynamic
Imimiselo yeXesha lokuSebenza eliDynamic inokutshintshwa nanini na kwaye isetyenziswe ngoko nangoko, naxa isitishi sisebenza. Ziboniswe kuMfanekiso wesi-6.

Ipharamitha	Inkcazo
Umxhasi ongaphantsi Ifomathi	Ikuvumela ukuba utshintshe phakathi kwe-IEEE 802.11 yeefomati eziqhelekileyo. Iifomathi ezixhaswayo zezi zilandelayo:

	· 802.11a kunye 20 MHz Bandwidth · 802.11ac kunye 20 MHz Bandwidth · 802.11ac kunye 40 MHz Bandwidth · 802.11ac enobubanzi obungama-80 MHz (i-MCS exhaswayo ukuya kuthi ga kwi-4)
I-MCS	Ukumodareyitha kunye nesalathiso sesikimu sekhowudi esetyenziselwa ukubethelela izakhelo zedatha. Izakhelo ze-ACK zihlala zithunyelwa kunye ne-MCS 0. Qaphela ukuba ayizizo zonke ixabiso le-MCS elisebenzayo kuzo zonke iifomathi ze-subcarrier kunye nentsingiselo ye-MCS iyatshintsha ngefomathi ye-subcarrier. Indawo yokubhaliweyo ecaleni kwentsimi ye-MCS ibonisa iskimu sokumodareyitha kunye nezinga lekhowudi ye-MCS yangoku kunye ne-Subcarrier Format.
AGC	Ukuba yenziwe yasebenza, isicwangciso senzuzo esisiso sikhethwa ngokuxhomekeke kumandla ombane ofunyenweyo. Ixabiso lenzuzo ye-RX lithathwa kwi-Manual RX Gain ukuba i-AGC ivaliwe.
Imanyuwali RX Inzuzo [dB]	Ixabiso le-RX ye-Manual. Isetyenziswa ukuba i-AGC ivaliwe.
Indawo ekuyiwa kuyo IMAC Idilesi	Idilesi ye-MAC yendawo ekuya kuyo iipakethi kufuneka zithunyelwe. Isalathisi se-Boolean sibonisa ukuba idilesi enikiweyo ye-MAC iyasebenza okanye hayi. Ukuba isebenza kwimowudi ye-loopback ye-RF, i Indawo ekuyiwa kuyo IMAC Idilesi kwaye i Isixhobo IMAC Idilesi kufuneka zifane.

Iimpawu
Le theyibhile ilandelayo ibonisa izikhombisi zenzeke kwindawo yolawulo ephambili njengoko kubonisiwe kuMfanekiso 6.

Ipharamitha	Inkcazo
Isixhobo Ulungile	Isalathisi se-Boolean sibonisa ukuba isixhobo silungile. Ukuba ufumana impazamo, zama enye yezi zilandelayo: · Qinisekisa ukuba isixhobo sakho seRIO siqhagamshelwe kakuhle. · Jonga ubumbeko lwe I-RIO Isixhobo. · Jonga inombolo yesitishi. Kufanele kwahluke ukuba ngaphezu kwesinye isitishi sisebenza kumamkeli omnye.
Ekujoliswe kuko FIFO Ukuphuphuma	Isalathisi esiphuphumayo esikhanyisa ukuba kukho ukuphuphuma koko kujoliswe kuko ukubamba (T2H) izithinteli zememori yokuqala-yokuqala-ngaphandle (FIFOs). Ukuba enye ye-T2H FIFOs iyaphuphuma, ulwazi lwayo alusathembeki. Ezo FIFO zezi zilandelayo: · T2H RX Ukuphuphuma kwedatha · T2H ukuphuphuma kweNkwenkwezi · T2H RX Power Spectrum ukuphuphuma · Uqikelelo lweSitishi seT2H luyaphuphuma · TX ukuya RF FIFO ukuphuphuma
Isitishi Iyasebenza	Isalathisi seBoolean sibonisa ukuba isikhululo iRF siyasebenza emva kokwenza isikhululo ngokuseta Vulela Isitishi lawula ukuya On.
Isetyenziswa RX Inzuzo [dB]	Isalathisi samanani sibonisa ixabiso lenzuzo ye-RX esetyenziswayo ngoku. Eli xabiso yi-Manual RX Gain xa i-AGC ivaliwe, okanye i-RX ebaliweyo xa i-AGC yenziwe yasebenza. Kuzo zombini iimeko, ixabiso lokuzuza linyanzeliswa ngamakhono esixhobo.
Iyasebenza	Izalathi zeBoolean zibonisa ukuba zinikiwe Isixhobo IMAC Idilesi kwaye Indawo ekuyiwa kuyo IMAC Idilesi ezinxulumene nezikhululo ziyasebenza.

Ithebhu ye-MAC

Ezi theyibhile zilandelayo zidwelisa ulawulo kunye nezalathi ezibekwe kwi-MAC Tab njengoko kubonisiwe kuMfanekiso 6.

Imimiselo yeXesha lokuSebenza eliDynamic

Ipharamitha

Inkcazo

Idatha Umthombo

Imisela imvelaphi yezakhelo ze-MAC ezithunyelwayo ukusuka kumamkeli ukuya kwitekeni. Cimile-Le ndlela iluncedo ukukhubaza ukuhanjiswa kwedatha ye-TX ngelixa ikhonkco le-TX lisebenza ukuqalisa iipakethi ze-ACK. UDP-Le ndlela iluncedo ekuboniseni iidemos, njengaxa usebenzisa i-app ye-streaming yevidiyo yangaphandle, okanye ukusebenzisa isixhobo sokuvavanya inethiwekhi yangaphandle, njenge-Iperf. Kule ndlela, idatha yegalelo ifika okanye iveliswa kwisikhululo se-802.11 usebenzisa i-da yomsebenzisitagiprotocol yenkunzi yegusha (UDP). PN Idatha-Le ndlela ithumela amasuntswana angaqhelekanga kwaye iluncedo kuvavanyo olusebenzayo. Ubungakanani bepakethi kunye nesantya sinokuguqulwa ngokulula.

	Imanyuwali-Le ndlela iluncedo ukuqalisa iipakethe enye ngeenjongo zokulungisa ingxaki. Ngaphandle-Vumela ukufezekiswa kwangaphandle kwe-MAC yangaphandle okanye ezinye izicelo zangaphandle zokusebenzisa imisebenzi ye-MAC & PHY enikezelwa yi-802.11 Application Framework.
Idatha Umthombo Iinketho	Ithebhu nganye ibonisa ukhetho lwemithombo yedatha ehambelanayo. UDP Ithebhu-Izibuko le-UDP lasimahla lokufumana kwakhona idatha ye-transmitter ithathwa ngokwendalo ngokusekwe kwinombolo yesitishi. PN Ithebhu – PN Idatha Ipakethi Ubungakanani-Ubungakanani bepakethi kwiibytes (uluhlu lukhawulelwe kwi-4061, eyi-A-MPDU enye encitshiswe nge-MAC ngaphezulu) PN Ithebhu – PN Iipakethi ngokwe Isibini-I-avareji yenani leepakethi ezithunyelwa ngesekhondi nganye (iqingqelwe kwi-10,000. I-output efikelelwayo inokuba ncinane ngokuxhomekeke kubume besikhululo). Imanyuwali Ithebhu – Qalisa TX-Ulawulo lwe-Boolean ukwenza ipakethi enye ye-TX.
Idatha Isinki	Inokhetho olulandelayo: ·          Cimile-Idatha ilahliwe. ·          UDP—Ukuba yenziwe, izakhelo ezifunyenweyo zithunyelwa kwidilesi ye-UDP emiselweyo kunye nezibuko (bona ngezantsi).
Idatha Isinki Ukhetho	Inolu lungelelwaniso lulandelayo olufunekayo kwi-UDP data sinki ukhetho: ·          Thumela IP Idilesi-Idilesi ye-IP yendawo ekuyiwa kuyo kumjelo wemveliso we-UDP. ·          Thumela Izibuko-I-port ye-UDP ekujoliswe kuyo kumjelo wokuphuma kwe-UDP, ihlala iphakathi kwe-1,025 kunye ne-65,535.
Lungisa kwakhona TX Ubalo	Ulawulo lweBoolean ukuseta ngokutsha zonke izinto zokubala ze IMAC TX Amanani iqela.
Lungisa kwakhona RX Ubalo	Ulawulo lweBoolean ukuseta ngokutsha zonke izinto zokubala ze IMAC RX Amanani iqela.
ixabiso ngokwe Isibini	Ulawulo lweBoolean ukubonisa i IMAC TX Amanani kwaye IMAC RX Amanani njengamaxabiso aqokelelweyo ukusukela kuhlaziyo lokugqibela okanye amaxabiso ngomzuzwana.

Iigrafu kunye neZalathi
Olu luhlu lulandelayo lubonisa izalathi kunye neegrafu ezinikezelwe kwiThebhu ye-MAC njengoko kubonisiwe kuMfanekiso 6.

Ipharamitha	Inkcazo
Idatha Umthombo Iinketho – UDP	Yamkela Izibuko-Umthombo wezibuko le-UDP lomjelo wegalelo le-UDP. FIFO Igcwele-Ibonisa ukuba i-socket buffer yomfundi we-UDP incinci ukufunda idatha enikeziweyo, ngoko ke iipakethi ziyawa. Yandisa isayizi ye-socket buffer. Idatha Udluliselo-Ibonisa ukuba iipakethi zifundwe ngempumelelo kwizibuko elinikiweyo. Jonga ukusasazwa kwevidiyo ngeenkcukacha ezithe vetshe.
Idatha Isinki Ukhetho – UDP	FIFO Igcwele-Ibonisa ukuba i-socket buffer yomthumeli we-UDP incinci ukufumana umvuzo ovela kwi-RX Data yokufikelela ngokuthe ngqo kwimemori (DMA) FIFO, ngoko ke iipakethi ziwisa. Yandisa isayizi ye-socket buffer. Idatha Udluliselo-Ibonisa ukuba iipakethi zifundwa ngempumelelo kwi-DMA FIFO kwaye zithunyelwa kwizibuko le-UDP elinikiweyo.
RX Iqela leenkwenkwezi	Isalathiso somzobo sibonisa iqela leenkwenkwezi ze-RX I/Q sampInxalenye yendawo yedatha efunyenweyo.
RX Umsebenzi [amasuntswana/s]	Ukwalathiso lwamanani lubonisa ireyithi yedatha eyimpumelelo efunyenweyo kunye nezakhelo ezikhutshiweyo ezihambelana ne Isixhobo IMAC Idilesi.
Idatha Ixabiso [Mbps]	Isalathiso somzobo sibonisa ireyithi yedatha eyimpumelelo efunyenweyo kunye nezakhelo ezikhutshiweyo ezihambelana ne Isixhobo IMAC Idilesi.
IMAC TX Amanani	Isalathiso samanani sibonisa amaxabiso ezinto zokubala zilandelayo ezinxulumene ne-MAC TX. Amaxabiso anikiweyo anokuba ngamaxabiso aqokelelweyo ukusukela ekusetweni ngokutsha kokugqibela okanye amaxabiso ngesekondi nganye ngokusekelwe kubume bolawulo lwe Boolean. ixabiso ngokwe Isibini. · RTS ivuselelwe · I-CTS ivuselelwe · Idatha iQuliwe · I-ACK iqhutywe
IMAC RX Amanani	Ukwalathiso lwamanani lubonisa amaxabiso ezinto zokubala ezilandelayo ezinxulumene ne-MAC RX. Amaxabiso anikiweyo anokuba ngamaxabiso aqokelelweyo ukusukela ekusetweni ngokutsha kokugqibela okanye amaxabiso ngesekondi nganye ngokusekelwe kubume bolawulo lwe Boolean. ixabiso ngokwe Isibini. · Intshayelelo ichongiwe (ngongqamaniso)

	· Iiyunithi zedatha yenkonzo ye-PHY (PSDUs) efunyenweyo (iifreyimu ezinenkqubo esebenzayo yokuguqula umaleko womzimba (PLCP) isihloko, izakhelo ngaphandle kokwaphulwa kwefomathi) · MPDU CRC Kulungile (ulandelelwano lokujonga isakhelo (FCS) jonga ukudlula) · I-RTS ichongiwe · CTS ichongiwe · Idatha ichongiwe · ACK ichongiwe
TX Impazamo Amaxabiso	Isalathiso somzobo sibonisa izinga lempazamo yepakethe ye-TX kunye nezinga lempazamo yebhloko ye-TX. Izinga lemposiso yepakethe ye-TX ibalwa njengomlinganiselo weMPDU ophumeleleyo ogqithiselwe kwinani leezama zothumelo. Izinga lempazamo yebhloko ye-TX ibalwa njengomlinganiselo weMPDU ophumeleleyo ogqithiselwe kwinani elipheleleyo lokudluliselwa. Awona maxabiso angoku nje aboniswe phezulu ekunene kwegrafu.
I-avareji Ukudluliselwa kwakhona ngokwe Ipakethi	Isalathiso somzobo sibonisa umndilili wenani lokuzama uthumelo. Ixabiso lamvanje liboniswe ekunene okuphezulu kwegrafu.

RF & PHY Tab
Ezi theyibhile zilandelayo zidwelisa ulawulo kunye nezalathi ezibekwe kwi-RF & PHY Tab njengoko kubonisiwe kuMfanekiso 8.

Imimiselo yeXesha lokuSebenza eliDynamic 

Ipharamitha	Inkcazo
CCA Amandla Ukufunyanwa Umqobo [dBm]	Ukuba amandla omqondiso ofunyenweyo angaphezulu komda, isikhululo sifanelekile ukuba i-medium ixakeke kwaye iphazamise inkqubo yayo ye-Backoff, ukuba ikhona. Seta i CCA Amandla Ukufunyanwa Umqobo [dBm] ulawulo kwixabiso eliphezulu kunexabiso elincinane legophe langoku kwigrafu ye-RF Input Power.

Iigrafu kunye neZalathi

Ipharamitha	Inkcazo
Ukunyanzelwa LO Ukuphindaphinda TX [Hz]	Okwenyani esetyenzisiweyo TX frequency kwithagethi.
RF Ukuphindaphinda [Hz]	Iziko le-RF frequency emva kohlengahlengiso olusekwe kwi Amabanga aphantsi Umjelo Umkhethi ulawulo kunye ne-bandwidth yokusebenza.
Ukunyanzelwa LO Ukuphindaphinda RX [Hz]	Eyona isetyenziswayo RX rhoqo ekujoliswe kuko.

Ukunyanzelwa Amandla Inqanaba [dBm]	Inqanaba lamandla lamaza aqhubekayo e-0 dBFS ebonelela ngoseto lwangoku lwesixhobo. Umyinge wemveliso yamandla eempawu ze-802.11 malunga ne-10 dB ngaphantsi kweli nqanaba. Ibonisa elona nqanaba lamandla lithathela ingqalelo amaza e-RF kunye namaxabiso athile olungelelwaniso lwesixhobo kwi-EEPROM.
Ihlawulelwe ICFO [Hz]	I-Carrier frequency offset ichongwe ngeyunithi yoqikelelo lwamaza arhabaxa. Kwimodyuli yeadaptha yeFlexRIO/FlexRIO, seta iwotshi yereferensi ibe yiPXI_CLK okanye REF IN/ClkIn.
Ukwenziwa komjelo	Isalathiso somzobo sibonisa ukuba yeyiphi i-sub-band esetyenziswa njengejelo eliphambili elisekelwe kwi Amabanga aphantsi Umjelo Umkhethi. I-PHY igubungela i-80 MHz bandwidth, enokuthi yohlulwe ibe ngama-sub-bands amane {0,…, 3} ye-20 MHz bandwidth yesiginali engeyo-HT. Kwi-bandwidths ebanzi (40 MHz okanye 80 MHz), ii-sub-bands ziyadityaniswa. Ndwendwela ni.com/info kwaye ufake iKhowudi yoLwazi 80211AppFWManual ukufikelela kwi ILabVIEW Unxibelelwano 802.11 Isicelo Isakhelo Imanyuwali ngolwazi oluthe kratya malunga nokusasaza.
Umjelo Uqikelelo	Isalathiso somzobo sibonisa i ampulwazi kunye nesigaba sesiteshi esiqikelelweyo (esekelwe kwi-L-LTF kunye ne-VHT-LTF).
Baseband RX Amandla	Isalathiso somzobo sibonisa amandla omqondiso we-baseband ekuqaleni kwepakethi. Isalathisi samanani sibonisa amandla esiseko somamkeli wokwenene. Xa i-AGC yenziwe, i 802.11 INkqubo yeSicelo izama ukugcina eli xabiso libekiwe AGC ekujoliswe kuko uphawu amandla in NONE ithebhu ngokutshintsha iRX inzuzo ngokufanelekileyo.
TX Amandla Spectrum	Umfanekiso okhawulezayo wespectrum yebhendi yangoku esuka kwiTX.
RX Amandla Spectrum	Umfanekiso okhawulezayo wespectrum ye-baseband yangoku esuka kwi-RX.
RF Igalelo Amandla	Ibonisa amandla akhoyo e-RF kwi-dBm nokuba loluphi uhlobo lwesignali engenayo ukuba i-802.11 ipakethi ifunyenwe. Esi salathisi sibonisa amandla e-RF egalelo, kwi-dBm, elinganiswayo ngoku, kunye nasekuqaleni kwepakethi yamva nje.

iTab ekwinqanaba eliphezulu

Le theyibhile ilandelayo idwelisa ulawulo olubekwe kwi-Tab ekwiNdlela ePhakamileyo njengoko kubonisiwe kuMfanekiso 9.

Imimiselo yeXesha lokuSebenza engatshintshiyo

Ipharamitha

Inkcazo

ulawulo isakhelo TX iVector uqwalaselo	Isebenzisa amaxabiso e-MCS amiselweyo kwiivekhtha ze-TX ze-RTS, i-CTS okanye izakhelo ze-ACK. Uqwalaselo lwesakhelo solawulo olungagqibekanga lwezo zakhelo yi-Non-HT-OFDM kunye ne-20 MHz bandwidth ngelixa i-MCS inokuqwalasela ukusuka kumamkeli.
dot11RTSTthreshold	Semi-static parameter esetyenziswa lukhetho lolandelelwano lwesakhelo ukugqiba ukuba i-RTS|CTS ivumelekile na okanye hayi. · Ukuba ubude be-PSDU, oko kukuthi, PN Idatha Ipakethi Ubungakanani, inkulu kune dot11RTSTthreshold, i {RTS | CTS | IDATHA | ACK} ulandelelwano lwesakhelo lusetyenziswa. · Ukuba ubude be-PSDU, oko kukuthi, PN Idatha Ipakethi Ubungakanani, ingaphantsi okanye ilingana ne dot11RTSTthreshold, i {DATA | ACK} ulandelelwano lwesakhelo lusetyenziswa. Lo matshini uvumela izikhululo ukuba ziqwalaselwe ukuqala i-RTS/CTS nokuba ngamaxesha onke, asoze, okanye kuphela kwizakhelo ezinde kunobude obuchaziweyo.
dot11ShortRetryLimit	Iparamitha yeSemi-static—Elona nani liphezulu lokuzama kwakhona kusetyenziswe uhlobo olufutshane lweMPDU (ulandelelwano ngaphandle kwe-RTS|CTS). Ukuba inani lemida yokuzama kwakhona lifikelelwe, ilahla iMPDUs kunye noqwalaselo lweMPDU olunxulumeneyo kunye nevektha yeTX.
dot11LongRetryLimit	Semi-static parameter-Elona nani liphezulu lokuzama kwakhona kufakwe kudidi lweMPDU ende (ulandelelwano oluquka i-RTS|CTS). Ukuba inani lemida yokuzama kwakhona lifikelelwe, ilahla iMPDUs kunye noqwalaselo lweMPDU olunxulumeneyo kunye nevektha yeTX.
RF Loopback Idemo Imowudi	Ulawulo lweBoolean ukutshintsha phakathi kweendlela zokusebenza: RF Izikhululo ezininzi (I-Boolean bubuxoki): Ubuncinci izikhululo ezibini ezifunekayo kulungiselelo, apho isikhululo ngasinye sisebenza njengesixhobo esinye se-802.11. RF Loopback (I-Boolean yinyaniso): Isixhobo esinye siyafuneka. Olu cwangciso luluncedo kwidemos ezincinci usebenzisa isitishi esinye. Nangona kunjalo, iimpawu eziphunyeziweyo ze-MAC zinemida ethile kwimowudi ye-Loopback yeRF. Iipakethi ze-ACK zilahlekile ngelixa i-MAC TX ilindile; Umatshini welizwe we-DCF kwi-FPGA ye-MAC inqanda le ndlela. Ngoko ke, i-MAC TX ihlala ibika ukuba ukuhanjiswa kwahluleka. Yiyo loo nto, ireyithi yempazamo yepakethi ye-TX exeliweyo kunye nezinga lempazamo yebhlokhi ye-TX kwisalathiso somzobo we-TX Error Rates zezinye.

Imimiselo yeXesha lokuSebenza eliDynamic 

Ipharamitha	Inkcazo
Buyela Umva	Ixabiso lokubuyela umva elisetyenziswa phambi kokuba isakhelo sihanjiswe. I-backoff ibalwa kwinani lezithuba ze-9 µs ubude. Ngokusekelwe kwixabiso lokubuyela umva, ukubalwa kwe-backoff yenkqubo ye-Backoff kunokulungiswa okanye ngokungacwangciswanga: · Ukuba ixabiso le-backoff lingaphezulu okanye lilingana no-zero, kusetyenziswa umva osisigxina. · Ukuba ixabiso lokubuyela umva alilunganga, ubalo olungalandelekiyo luyasetyenziswa.
AGC ekujoliswe kuko uphawu amandla	Okujoliswe kuko amandla e-RX kwisiseko sedijithali esisetyenzisiweyo ukuba i-AGC yenziwe yasebenza. Ixabiso elifanelekileyo lixhomekeke kwi-peak-to-avareji yamandla ratio (PAPR) yesiginali efunyenweyo. Seta i AGC ekujoliswe kuko uphawu amandla kwixabiso elikhulu kunelo linikezelwe kwi Baseband RX Amandla igrafu.

Ithebhu yeMisitho
Ezi theyibhile zilandelayo zidwelisa ulawulo kunye nezalathi ezibekwe kwiThebhu yeziganeko njengoko kubonisiwe kuMfanekiso 10.

Imimiselo yeXesha lokuSebenza eliDynamic

Ipharamitha	Inkcazo
FPGA iziganeko ukuya umkhondo	Ineqela lolawulo lwe-Boolean; ulawulo ngalunye lusetyenziselwa ukwenza okanye ukukhubaza umkhondo wesiganeko esihambelanayo seFPGA. Ezo ziganeko zezi zilandelayo: ·          PHY TX qala isicelo ·          PHY TX isiphelo umqondiso ·          PHY RX qala umqondiso ·          PHY RX isiphelo umqondiso ·          PHY CCA ixesha umqondiso ·          PHY RX inzuzo utshintsho umqondiso ·          I-DCF urhulumente umqondiso ·          IMAC MPDU RX umqondiso ·          IMAC MPDU TX isicelo
Konke	Ulawulo lweBoolean ukwenza ukuba umkhondo weziganeko zeFPGA zingentla.
Akukho nanye	Ulawulo lweBoolean ukuvala umkhondo weziganeko ezingentla zeFPGA.
log file isimaphambili	Xela isicatshulwa file ukubhala iinkcukacha zeziganeko zeFPGA ezifundwe kwiSigigaba seDMA FIFO. Babonise ngasentla kwi FPGA iziganeko ukuya umkhondo. Isiganeko ngasinye siqulathe ixesha stamp kunye nedatha yesiganeko. Isicatshulwa file yenziwe ekuhlaleni kwifolda yeprojekthi. Kuphela imisitho ekhethiweyo kwi FPGA iziganeko ukuya umkhondo ngasentla kuya kubhalwa kwisicatshulwa file.
Bhala ukuya file	Ulawulo lweBoolean ukwenza okanye ukuvala inkqubo yokubhala yeziganeko ezikhethiweyo zeFPGA kumbhalo file.
Cacileyo Iziganeko	Ulawulo lweBoolean lokususa imbali yeziganeko kwiqela eliphambili. Ubungakanani berejista engagqibekanga yembali yomsitho yi-10,000.

Indawo yesithuba

Ezi theyibhile zilandelayo zidwelisa izikhombisi ezibekwe kwiTabhu yeNdawo njengoko kubonisiwe kuMfanekiso 11.

Iigrafu kunye neZalathi

Ipharamitha	Inkcazo
TX	Inika inani lezalathi ezibonisa inani lemiyalezo egqithiselwe phakathi kweeleya ezahlukeneyo, ukusuka kumthombo wedatha ukuya kwi-PHY. Ukongeza, ibonisa izibuko ze-UDP ezihambelanayo.
Idatha umthombo	inani iipakethi umthombo: Isalathisi samanani sibonisa inani leepakethi ezifunyenwe kumthombo wedatha (i-UDP, i-PN Data, okanye i-Manual). ugqithiselo umthombo: Isalathisi seBoolean sibonisa ukuba idatha ifumana kumthombo wedatha (inani leepakethi ezifunyenweyo ayingoziro).
Phezulu IMAC	TX Isicelo Phezulu IMAC: Izalathi zamanani zibonisa inani le-MAC TX Configuration kunye nemiyalezo yesicelo se-Payload eyenziwe yi-MAC high abstraction layer kwaye ibhaliwe kwi-port ye-UDP ehambelana nayo ephantsi kwayo.
Phakathi IMAC	TX Isicelo Phakathi IMAC: Iimpawu zamanani zibonisa inani le-MAC TX Configuration kunye nemiyalezo yesicelo se-Payload efunyenwe kwi-MAC high abstraction layer kwaye ifundwe kwi-port ye-UDP ehambelanayo ephezu kwayo. Ngaphambi kokuba uthumele imiyalezo yomibini kumanqanaba asezantsi, uqwalaselo olunikiweyo lujongwe ukuba luxhaswe okanye aluxhaswanga, ukongeza, isicelo sokuCwangciswa kwe-MAC TX kunye nesicelo se-MAC TX Payload ihlolwe ukuba ihambelana. TX Izicelo ukuya PHY: Isalathisi samanani sibonisa inani lezicelo ze-MAC MSDU TX ezibhalelwe i-DMA FIFO. TX Isiqinisekiso Phakathi IMAC: Iimpawu zamanani zibonisa inani lemiyalezo yokuqinisekisa eyenziwe ngumbindi we-MAC kwi-MAC TX Configuration kunye ne-MAC TX Payload imiyalezo kwaye ibhaliwe kwi-port ye-UDP eyabelwe ebekwe phezu kwayo. TX Iimpawu ukusuka PHY: Isalathisi samanani sibonisa inani lezalathiso zokuphela ze-MAC MSDU TX ezifundwe kwi-DMA FIFO. TX Iimpawu Phakathi IMAC: Isalathisi samanani sibonisa inani leZalathi zobume be-MAC TX ezixeliweyo ukusuka kuMbindi we-MAC ukuya kwi-MAC ephezulu kusetyenziswa izibuko le-UDP elabelwe elibekwe ngasentla kwayo.
PHY	TX Iimpawu Ukuphuphuma: Isalathisi samanani sibonisa inani lokuphuphuma okukhulu okwenzeka ngexesha lokubhalwa kwe-FIFO ngeempawu ze-TX End.
RX	Inika inani lezalathisi ezibonisa inani lemiyalezo edluliselwe phakathi kweeleya ezahlukeneyo, ukusuka kwi-PHY ukuya kwisinki yedatha. Ukongeza, ibonisa izibuko ze-UDP ezihambelanayo.

PHY	RX Isalathiso Ukuphuphuma: Isalathisi samanani sibonisa inani lokuphuphuma okukhulu okwenzeke ngexesha lokubhalwa kwe-FIFO ngezibonakaliso ze-MAC MSDU RX.
Phakathi IMAC	RX Iimpawu ukusuka PHY: Isalathisi samanani sibonisa inani lezalathiso ze-MAC MSDU RX ezifundwe kwi-DMA FIFO. RX Iimpawu Phakathi IMAC: Isalathisi samanani sibonisa inani lezibonakaliso ze-MAC MSDU RX eziye zachazwa ngokuchanekileyo kwaye zichazwe kwi-MAC ephezulu kusetyenziswa i-port ye-UDP eyabelwe ebekwe phezu kwayo.
Phezulu IMAC	RX Iimpawu Phezulu IMAC: Isalathisi samanani sibonisa inani lezalathiso ze-MAC MSDU RX ezinedatha esebenzayo ye-MSDU efunyenwe kwi-MAC ephezulu.
Idatha isinki	inani iipakethi isinki: Inani leepakethi ezifunyenweyo kwisinki yedatha ukusuka kwi-MAC ephezulu. ugqithiselo isinki: Isalathisi seBoolean sibonisa ukuba idatha ifumana ukusuka kwi-MAC ephezulu.

Iindlela zokuSebenza ezongezelelweyo kunye noKhetho loLungiselelo

Eli candelo lichaza ezinye iinketho zoqwalaselo kunye neendlela zokusebenza. Ukongeza kwindlela ye-RF Multi-Station echazwe kwi-Running Le Sample candelo leProjekthi, i-802.11 Application Framework ixhasa iRF Loopback kunye neendlela zokusebenza zeBaseband usebenzisa isixhobo esinye. Amanyathelo aphambili okuqhuba i-802.11 Application Framework usebenzisa ezo ndlela zimbini zichazwe koku kulandelayo.

Imowudi ye-Loopback yeRF: Intambo
Ngokuxhomekeke kuqwalaselo, landela amanyathelo kwindawo ethi "Ukuqwalasela i-USRP RIO Setup" okanye "Ukuqwalasela i-FlexRIO/FlexRIO Ukusetwa kweModyuli ye-Adapter".

Ukuqwalasela i-USRP RIO Setup 

1. Qinisekisa isixhobo se-USRP RIO siqhagamshelwe ngokufanelekileyo kwisixokelelwano somamkeli oqhuba iLabVIEW Inkqubo yoYilo loNxibelelwano Suite.
2. Yenza uqwalaselo lwe-loopback ye-RF usebenzisa intambo ye-RF enye kunye ne-attenuator.
   • a. Qhagamshela intambo kwi-RF0/TX1.
   • b. Qhagamshela i-30 dB attenuator kwelinye icala lentambo.
   • c. Qhagamshela i-attenuator kwi-RF1/RX2.
3. Amandla kwisixhobo se-USRP.
4. Amandla kwinkqubo yokusingatha.

Ukuqwalasela ukuSetwa kweModyuli yeFlexRIO

1. Qinisekisa ukuba isixhobo seFlexRIO sifakwe ngokufanelekileyo kwisistim eqhuba iLabVIEW Inkqubo yoYilo loNxibelelwano Suite.
2. Yenza uqwalaselo lwe-loopback ye-RF edibanisa i-TX yemodyuli ye-NI-5791 kunye ne-RX yemodyuli ye-NI-5791.

Ukuqhuba iLebhuVIEW Ikhowudi yomamkeli
Imiyalelo malunga nokuqhuba iLebhuVIEW ikhowudi yokusingatha sele inikezelwe kwi "Ukuqhuba le Sample Project” icandelo le-RF Multi-Station operation mode. Ukongeza kwimiyalelo yeNyathelo loku-1 kwelo candelo, gqibezela la manyathelo alandelayo:

1. Indlela yokusebenza emiselweyo yi-RF Multi-Station. Tshintshela kwi-Ekukwinqanaba eliphezulu ithebhu kwaye wenze i-RF Loopback Demo Mode yolawulo. Oku kuya kuphumeza olu tshintsho lulandelayo:
   • Imo yokusebenza iya kutshintshelwa kwimowudi yeRF Loopback
   •  Idilesi ye-MAC yeSixhobo kunye nedilesi ye-MAC yokufikela iya kufumana idilesi efanayo. Umzekeloample, zombini inokuba 46:6F:4B:75:6D:61.
2. Qhuba iLebhuVIEW host VI ngokunqakraza iqhosha lokubaleka ( ).
   • a. Ukuba uphumelele, isalathisi sokuLungela isiXhobo sikhanyisa.
   • b. Ukuba ufumana impazamo, zama enye yezi zilandelayo:
     • Qinisekisa ukuba isixhobo sakho siqhagamshelwe kakuhle.
     • Jonga uqwalaselo lwesixhobo seRIO.
3. Yenza isitishi sisebenze ngokuseta Ulawulo Lwesikhululo lweSitishi luvuleleke. Isalathisi esisebenzayo kufuneka sivulwe.
4. Ukwandisa i-RX Throughput, tshintshela kwi-Advanced tab kwaye usete ixabiso lokubuyela emva kwenkqubo ye-Backoff ukuya kwi-zero, ekubeni isikhululo esinye kuphela esisebenzayo. Ukongeza, seta elona nani liphezulu lokuzama kwakhona kwe-dot11ShortRetryLimit ukuya ku-1. Khubaza uze uvule isitishi usebenzisa i-Eneble Station control, ekubeni i-dot11ShortRetryLimit iyipharamitha emileyo.
5. Khetha ithebhu ye-MAC, kwaye uqinisekise i-RX Constellation ebonisiweyo ihambelana nokumodareyitha kunye neskimu sekhowudi esiqwalaselwe kusetyenziswa i-MCS kunye ne-Subcarrier Format parameters. Umzekeloample, 16 QAM isetyenziswa MCS 4 yaye 20 MHz 802.11a. Ngeesethingi ezingagqibekanga kufuneka ubone i-output emalunga ne-8.2 Mbits/s.

Imowudi ye-Loopback ye-RF: Ukuhanjiswa kwe-Over-the-Air
Ukuhanjiswa emoyeni kuyafana nokuseta ngentambo. Iingcingo zitshintshwa zii-eriyali ezilungele i-frequency ye-channel ye-channel ekhethiweyo kunye ne-bandwidth yenkqubo.

Isilumkiso Funda uxwebhu lwemveliso yawo onke amacandelo ehardware, ngakumbi izixhobo ze-NI RF, phambi kokusebenzisa inkqubo.
Izixhobo ze-USRP RIO kunye neFlexRIO azivunywanga okanye zinelayisensi yokuhanjiswa emoyeni usebenzisa i-eriyali. Ngenxa yoko, ukusebenzisa ezo mveliso nge-eriyali kunokwaphula imithetho yendawo. Qinisekisa ukuba uyayithobela yonke imithetho yasekhaya phambi kokuba usebenzise le mveliso nge-eriyali.

Imowudi yeBaseband Loopback
I-baseband loopback iyafana ne-RF loopback. Kule modi, iRF igqithiswa. TX sampLes zigqithiselwa ngokuthe ngqo kwitsheyini yokusetyenzwa kwe-RX kwiFPGA. Akukho cingo kwizihlanganisi zesixhobo ezifunekayo. Ukuqhuba isitishi kwi-Baseband Loopback, seta ngesandla imo yokusebenza ebekwe kumzobo webhloko njengesiqhelo kwi-Baseband Loopback.

IiNdlela zoLungiselelo ezongezelelweyo

PN Data Generator
Ungasebenzisa i-pseudo-noise (PN) i-generator yedatha eyakhelwe-ngaphakathi ukwenza i-TX yedatha yedatha, eluncedo ekulinganiseni ukusebenza kwenkqubo yokuphuma. I-PN data generator iqulunqwe yi-PN Data Packet size kunye ne-PN iipakethi kwiiparamitha zeSibini. Ireyithi yedatha kwimveliso yePN Data Generator ilingana nemveliso yazo zombini iiparamitha. Qaphela ukuba eyona nkqubo yokuphuma kwenkqubo ebonwayo kwicala le-RX ixhomekeke kwiiparamitha zothumelo, kubandakanywa ifomathi ye-Subcarrier kunye nexabiso le-MCS, kwaye ingaba ngaphantsi komlinganiselo owenziwe yi-PN data generator.
La manyathelo alandelayo abonelela nge-example yendlela umvelisi wedatha we-PN angabonisa ngayo impembelelo yolungiselelo lweprotocol yothumelo kwi-output efikelelwayo. Qaphela ukuba amaxabiso ogqithiso olunikiweyo anokwahluka kancinane ngokuxhomekeke kwiqonga lehardware elisetyenzisiweyo kunye netshaneli.

1. Cwangcisa, qwalasela, kwaye uqhube izitishi ezibini (Isikhululo A kunye neSikhululo B) esinje ngo “Ukuqhuba le S.ample Project” icandelo.
2. Lungisa ngokufanelekileyo useto lweDilesi ye-MAC yeSixhobo kunye nedilesi ye-MAC yokuFikela ukuze idilesi yesixhobo seSikhululo A ibe yindawo ekusingwa kuyo isiKhululo B kwaye ngokuphendululekileyo njengoko bekuchaziwe ngaphambili.
3. KwiSitishi B, seta uMthombo weDatha kwiManuwali ukuvala idatha yeTX esuka kwiSikhululo B.
4. Vula zombini izitishi.
5. Ngoseto oluhlala lukhona, kufuneka ubone i-output emalunga ne-8.2 Mbits/s kwiSikhululo B.
6. Tshintshela kwithebhu ye-MAC yesiKhululo A.
   1. Misela ubungakanani bePakethi yeDatha yePN kwi4061.
   2. Misela inani lePN Packets ngeSibini ukuya kwi-10,000. Esi sicwangciso sizalisa i-TX buffer kulo lonke uqwalaselo olunokwenzeka.
7. Tshintshela kwithebhu eNgxaki yesiKhululo A.
   1. Misela i-dot11RTSTthreshold kwixabiso elikhulu kunobungakanani bePakethi yeDatha yePN (5,000) ukuvala inkqubo ye-RTS/CTS.
   2. Seta elona nani liphezulu lokuzama kwakhona elimelwe yi-dot11ShortRetryLimit ukuya ku-1 ukuvala ugqithiso.
8. Khubaza kwaye emva koko uvule isiKhululo A ukusukela ukuba i-dot11RTSTthreshold iyipharamitha emileyo.
9. Zama indibaniselwano eyahlukileyo ye-Subcarrier Format kunye ne-MCS kwiSikhululo A. Qwalasela utshintsho kwi-RX constellation kunye ne-RX throughput kwiSikhululo B.
10. Seta i-Subcarrier Fomathi ibe yi-40 MHz (IEEE 802.11ac) kunye ne-MCS ukuya ku-7 kwisitishi A. Qaphela ukuba i-throughput kwiSikhululo B imalunga nama-72 Mbits/s.

Ukuhanjiswa kweVidiyo
Ukuhanjiswa kweevidiyo kuqaqambisa izakhono ze-802.11 Application Framework. Ukwenza usasazo lwevidiyo ngezixhobo ezibini, seta ulungelelwaniso njengoko kuchaziwe kwicandelo elingaphambili. Isakhelo seSicelo se-802.11 sibonelela nge-interface ye-UDP, efanelekileyo ngokufanelekileyo ukusasazwa kwevidiyo. Umthumeli kunye nomamkeli bafuna usetyenziso lwevidiyo yomjelo (umzekeloample, VLC, enokukhutshelwa kwi-http://videolan.org). Nayiphi na inkqubo ekwazi ukudlulisa idatha ye-UDP ingasetyenziswa njengomthombo wedatha. Ngokufanayo, nayiphi na inkqubo ekwazi ukufumana idatha ye-UDP ingasetyenziswa njengedatha yedatha.

Qwalasela uMamkeli
Umninimzi osebenza njengomamkeli usebenzisa i-802.11 yeNkqubo yeSicelo ukuba idlule ifunyenwe i-802.11 isakhelo sedatha kwaye idlulise nge-UDP kumdlali wevidiyo.

1. Yenza iprojekthi entsha njengoko ichaziwe "Ukuqhuba iLabhuVIEW IKhowudi yomamkeli” kwaye usete isazisi seRIO esichanekileyo kwiparamitha yesixhobo seRIO.
2. Seta iNombolo yesitishi ukuya ku-1.
3. Vumela iNdlela yokuSebenza ebekwe kumzobo webhloko ukuba ube nexabiso elingagqibekanga, iRF Multi Station, njengoko kuchaziwe ngaphambili.
4. Vumela idilesi ye-MAC yeSixhobo kunye nedilesi ye-MAC yokuSikela ukuba ibe namaxabiso angagqibekanga.
5. Tshintshela kwithebhu ye-MAC kwaye usete iSinki yeDatha kwi-UDP.
6. Vula isitishi.
7. Qala i-cmd.exe kwaye utshintshe kuluhlu lofakelo lweVLC.
8. Qala usetyenziso lweVLC njengomxhasi wokusasaza ngomyalelo olandelayo: vlc udp://@:13000, apho ixabiso le-13000 lilingana ne-Port Transmit ye-Data Sink Option.

Qwalasela isiThuthi
Umsingathi osebenza njengomthumeli ufumana iipakethi ze-UDP kwi-server yokusasazwa kwevidiyo kwaye usebenzisa i-802.11 Isakhelo seSicelo sokuzihambisa njengezakhelo zedatha ye-802.11.

1. Yenza iprojekthi entsha njengoko ichaziwe "Ukuqhuba iLabhuVIEW IKhowudi yomamkeli” kwaye usete isazisi seRIO esichanekileyo kwiparamitha yesixhobo seRIO.
2. Seta iNombolo yesitishi ukuya ku-2.
3. Vumela iNdlela yokuSebenza ebekwe kumzobo webhloko ukuba ube nexabiso elingagqibekanga, iRF Multi Station, njengoko kuchaziwe ngaphambili.
4. Seta idilesi ye-MAC yeSixhobo ukuba ifane nedilesi ye-MAC yokuSikela kwiSikhululo soku-1 (ixabiso elihlala likhona:
   46:6F:4B:75:6D:62)
5.  Seta idilesi ye-MAC yokufikela ifane neDilesi ye-MAC yeSixhobo seSikhululo soku-1 (ixabiso elimiselweyo:
   46:6F:4B:75:6D:61)
6. Tshintshela kwithebhu ye-MAC kwaye usete uMthombo weDatha kwi-UDP.
7. Vula isitishi.
8. Qala i-cmd.exe kwaye utshintshe kuluhlu lofakelo lweVLC.
9. Chonga indlela eya kwividiyo file eya kusetyenziselwa ukusasaza.
10. Qala usetyenziso lweVLC njengomncedisi wosasazo ngalo myalelo ulandelayo vlc “PATH_TO_VIDEO_FILE”
    :sout=#std{access=udp{ttl=1},mux=ts,dst=127.0.0.1: UDP_Port_Value}, apho PATH_TO_VIDEO_FILE kufuneka kutshintshwe indawo yevidiyo ekufuneka isetyenziswe, kwaye iparameter UDP_Port_Value ilingana ne 12000 + Inombolo yesitishi, oko kukuthi, 12002.
    Umamkeli osebenza njengomamkeli uya kubonisa ividiyo esasazwa ngumthumeli.

Ukulungisa ingxaki

Eli candelo libonelela ngolwazi malunga nokuchonga oyena nobangela wengxaki ukuba inkqubo ayisebenzi njengoko kulindelekile. Icaciswe kulungiselelo lwezikhululo ezininzi apho isitishi A kunye neSikhululo B zisasaza khona.
Ezi theyibhile zilandelayo zibonelela ngolwazi malunga nendlela yokuqinisekisa ukusebenza okuqhelekileyo kunye nendlela yokubona iimpazamo eziqhelekileyo.

Okuqhelekileyo Ukusebenza
Okuqhelekileyo Ukusebenza Uvavanyo	· Misela amanani esitishi kumaxabiso awohlukeneyo. · Lungisa kakuhle useto lwe Isixhobo IMAC Idilesi kwaye Indawo ekuyiwa kuyo IMAC Idilesi njengoko kuchaziwe ngaphambili. · Shiya ezinye iisetingi kumaxabiso amiyo.
	Iingqwalasela:
	· I-RX throughput kuluhlu lwe-7.5 Mbit/s kuzo zombini izikhululo. Kuxhomekeke ukuba ngaba sisitishi esingenazingcingo okanye isitishi esinentambo. · Vula IMAC ithebhu: o    IMAC TX Amanani: I Idatha ibangelwe kwaye ACK Yenziwe izalathisi zikhula ngokukhawuleza. o    IMAC RX Amanani: Zonke izalathisi zikhula ngokukhawuleza kunokuba RTS ibhaqwe kwaye CTS ibhaqwe, kuba dot11RTSthreshold on NONE ithebhu inkulu kune PN Idatha Ipakethi Ubungakanani (ubude bePSDU) kwi IMAC ithebhu. o Ikroza kwi RX Iqela leenkwenkwezi igrafu ihambelana nolandelelwano loguqulo lwe I-MCS ekhethiweyo kwisidlulisi. o I TX Vimba Impazamo Ixabiso igrafu ibonisa ixabiso elamkelekileyo. · Vula RF & PHY ithebhu:

	o I RX Amandla Spectrum ibekwe kuluhlu olusezantsi olusekwe kokukhethiweyo Amabanga aphantsi Umjelo Umkhethi. Ekubeni ixabiso elimiselweyo ngu-1, kufuneka libe phakathi kwe -20 MHz kunye ne-0 kwi RX Amandla Spectrum igrafu. o I CCA Amandla Ukufunyanwa Umqobo [dBm] inkulu kunamandla angoku kwi RF Igalelo Amandla igrafu. o Amandla e-baseband alinganisiweyo ekuqaleni kwepakethi (amachaphaza abomvu) ngaphakathi Baseband RX Amandla igrafu kufuneka ibe ngaphantsi kwe AGC ekujoliswe kuko uphawu amandla on NONE ithebhu.
IMAC Amanani Uvavanyo	· Khubaza isitishi A kunye neSikhululo B · Kwisikhululo A, IMAC tab, seta i Idatha Umthombo ukuya Imanyuwali. · Vula isitishi A kunye neSikhululo B o Isitishi A, IMAC ithebhu: §   Idatha ibangelwe of IMAC TX Amanani ngu zero. §   ACK ibangelwe of IMAC RX Amanani ngu zero. o Isitishi B, IMAC ithebhu: §   RX Umsebenzi ngu zero. §   ACK ibangelwe of IMAC TX Amanani ngu zero. §   Idatha ibhaqwe of IMAC RX Amanani ngu zero. · Kwisikhululo A, IMAC tab, cofa kube kanye nje Qalisa TX of Imanyuwali Idatha Umthombo o Isitishi A, IMAC ithebhu: §   Idatha ibangelwe of IMAC TX Amanani yi 1. §   ACK ibangelwe of IMAC RX Amanani yi 1. o Isitishi B, IMAC ithebhu: §   RX Umsebenzi ngu zero. §   ACK ibangelwe of IMAC TX Amanani yi 1. §   Idatha ibhaqwe of IMAC RX Amanani yi 1.
RTS / CTS izixhobo zokubala Uvavanyo	· Khubaza isitishi A, seta i dot11RTSTthreshold ukuya ku-zero, kuba yiparameter emileyo. Emva koko, vula isitishi A. · Kwisikhululo A, IMAC tab, cofa kube kanye nje Qalisa TX of Imanyuwali Idatha Umthombo o Isitishi A, IMAC ithebhu: §   RTS ibangelwe of IMAC TX Amanani yi 1. §   CTS ibangelwe of IMAC RX Amanani yi 1. o Isitishi B, IMAC ithebhu: §   CTS ibangelwe of IMAC TX Amanani yi 1. §   RTS ibangelwe of IMAC RX Amanani yi 1.

Ayilunganga Uqwalaselo
Inkqubo Uqwalaselo	· Misela amanani esitishi kumaxabiso awohlukeneyo. · Lungisa kakuhle useto lwe Isixhobo IMAC Idilesi kwaye Indawo ekuyiwa kuyo IMAC Idilesi njengoko kuchaziwe ngaphambili. · Shiya ezinye iisetingi kumaxabiso amiyo.
Impazamo: Hayi idatha kubonelelwe ngenxa usulelo	Isalathiso: Amaxabiso ekhawuntara ye Idatha ibangelwe kwaye ACK ibangelwe in IMAC TX Amanani azinyuswa. Isisombululo: Seta Idatha Umthombo ukuya PN Idatha. Okanye, seta Idatha Umthombo ukuya UDP kwaye uqinisekise ukuba usebenzisa isicelo sangaphandle ukubonelela ngedatha kwizibuko le-UDP eqwalaselwe ngokuchanekileyo njengoko kuchaziwe ngaphambili.
Impazamo: IMAC TX iqwalasela i phakathi as ndixakekile	Isalathiso: Amaxabiso eNkcazo yeMAC ye Idatha Yenziwe kwaye intshayelelo ibhaqwe, inxalenye ye IMAC TX Amanani kwaye IMAC RX Amanani, ngokulandelanayo, ayanda. Isisombululo: Jonga amaxabiso egophe yangoku kwi RF Igalelo Amandla igrafu. Seta i CCA Amandla Ukufunyanwa Umqobo [dBm] ulawulo kwixabiso eliphezulu kunexabiso elincinane lalo jiko.
Impazamo: Thumela Kaninzi idatha iipakethi kunokuba i IMAC unako Nika ukuya i PHY	Isalathiso: I PN Idatha Ipakethi Ubungakanani kwaye i PN Iipakethi Per Isibini zandiswa. Nangona kunjalo, impumelelo efunyenweyo ayondiswanga. Isisombululo: Khetha ephezulu I-MCS ixabiso nangaphezulu Umxhasi ongaphantsi Ifomathi.
Impazamo: engalunganga RF amazibuko	Isalathiso: I RX Amandla Spectrum ayibonisi igophe elifanayo njenge TX Amandla Spectrum kwesinye isikhululo. Isisombululo:

	Qinisekisa ukuba unazo iintambo okanye ii-eriyali eziqhagamshelwe kumazibuko eRF othe wawaqwalasela TX RF Izibuko kwaye RX RF Izibuko.
Impazamo: IMAC idilesi ukungafani	Isalathiso: KwiSitishi B, akukho kuhanjiswa kwepakethi ye-ACK kuqaliswayo (inxalenye ye IMAC TX Amanani) kwaye i RX Umsebenzi ngu zero. Isisombululo: Khangela ukuba Isixhobo IMAC Idilesi yeSitishi B sihambelana ne Indawo ekuyiwa kuyo IMAC Idilesi yeSitishi A. Kwimowudi ye-Loopback yeRF, zombini Isixhobo IMAC Idilesi kwaye Indawo ekuyiwa kuyo IMAC Idilesi kufuneka ibenedilesi efanayo, ngokomzekeloample 46:6F:4B:75:6D:61.
Impazamo: Phezulu ICFO if Isitishi A kwaye B zi IiFlexRIOs	Isalathiso: I-compenated carrier frequency offset (CFO) iphezulu, ethoba yonke intsebenzo yenethiwekhi. Isisombululo: Seta i Isalathiso Ikloko ukuya PXI_CLK okanye REF IN/ClkIn. · KuPXI_CLK: Isalathiso sithathwe kwi-chassis ye-PXI. · I-REF IN/ClkIn: Isalathiso sithathwe kwizibuko le-ClkIn lika-NI-5791.
TX Impazamo Amaxabiso zi Nye in RF Loopback or Baseband Loopback ukusebenza iindlela	Isalathiso: Isikhululo esinye sisetyenziswa apho imo yokusebenza imiselwe khona RF Loopback or Baseband Loopback indlela. Isalathiso somzobo we-TX Impazamo yeeReyithi ibonisa 1. Isisombululo: Oku kuziphatha kulindeleke. Iipakethi ze-ACK zilahlekile ngelixa i-MAC TX ilindile; Umatshini welizwe we-DCF kwi-FPGA ye-MAC iyakuthintela oku kwimeko ye-RF loopback okanye iindlela ze-Baseband Loopback. Ngoko ke, i-MAC TX ihlala ibika ukuba ukuhanjiswa kwahluleka. Yiyo loo nto, ireyithi yempazamo yepakethe ye-TX exeliweyo kunye nezinga lempazamo yebhlokhi ye-TX ngooziro.

Imiba eyaziwayo
Qinisekisa ukuba isixhobo se-USRP sele sisebenza kwaye siqhagamshelwe kumamkeli phambi kokuba umamkeli aqaliswe. Kungenjalo, isixhobo se-USRP RIO sinokungaqondwa kakuhle ngumamkeli.
Uluhlu olupheleleyo lwemiba kunye nolungiso lubekwe kwiLebhuVIEW Unxibelelwano 802.11 Isakhelo seSicelo 2.1 Imiba eyaziwayo.

Ulwazi olunxulumeneyo
USRP-2940/2942/2943/2944/2945 Isikhokelo sokuQalisa i-USRP-2950/2952/2953/2954/2955 Isikhokelo sokuQalisa uMbutho weMigangatho we-IEEE: 802.11 iiLAN ezingenazingcingo Bhekisela kwiLebhuVIEW Incwadi yoYilo lweNkqubo yoNxibelelwano, ekhoyo kwi-intanethi, ngolwazi malunga neLebhuVIEW iikhonsepthi okanye izinto ezisetyenziswe kweli candeloample projekthi.
Ndwendwela ni.com/info kwaye ufake iKhowudi yoLwazi 80211AppFWManual ukufikelela kwiLebhuVIEW Unxibelelwano 802.11 Incwadi yesiKhokelo seSicelo ngolwazi oluthe kratya malunga noyilo lwe-802.11 yeSikhokelo seSicelo.
Kananjalo ungasebenzisa i window yoNcedo loMxholo ukufunda ulwazi olusisiseko malunga neLabVIEW izinto njengoko uhambisa ikhesa phezu kwento nganye. Ukubonisa ifestile yoNcedo loMxholo kwiLabVIEW, khetha View»Uncedo lomxholo.

Izishunqulelo

Isifinyezo	Intsingiselo
ACK	Ukuvuma
AGC	Ulawulo lokuzuza oluzenzekelayo
A-MPDU	I-MPDU edityanisiweyo
CCA	Sula uvavanyo lwetshaneli
ICFO	I-Carrier frequency offset
CSMA/CA	Umthwali uziva ukufikelela okuninzi ngokuphepha ukungqubana
CTS	Kucacile-ukuthumela
CW	Amaza aqhubekayo
I-DAC	Idijithali ukuya kwisiguquli se-analog
I-DCF	Umsebenzi wolungelelaniso osasaziweyo

I-DMA	Ufikelelo ngqo kwimemori
FCS	Ulandelelwano lokukhangela isakhelo
IMAC	Umaleko wolawulo lofikelelo oluphakathi
I-MCS	Ukumodareyitha kunye nesikimu sekhowudi
MIMO	Iingeniso ezininzi-ezininzi
MPDU	Iyunithi yedatha yeprotocol ye-MAC
NAV	IVector yolwabiwo lwenethiwekhi
No-HT	Ugqithiso olungekho phezulu
OFDM	I-Orthogonal frequency-division multiplexing
PAPR	Incopho ukuya kumlinganiselo wamandla ophakathi
PHY	Umaleko womzimba
I-PLCP	Inkqubo yokudibanisa umaleko womzimba
PN	Ingxolo yobuxoki
PSDU	Iyunithi yedatha yenkonzo ye-PHY
QAM	Iquadrature ampukumodareyitha
RTS	Isicelo-sokuthumela
RX	Yamkela
SIFS	Isithuba esifutshane se-interframe
SISO	Igalelo elinye imveliso enye
T2H	Ekujoliswe kuko kumamkeli
TX	Thumela
UDP	Umsebenzisi datagiprotocol yenkunzi yegusha

[1] Ukuba usasaza emoyeni, qiniseka ukuba uyayiqwalasela imiyalelo enikwe kwi-“RF Multi Station Mode: Over-the-Air Transmission” icandelo. Izixhobo ze-USRP kunye ne-NI-5791 azivunyelwanga okanye zinelayisensi yokuhanjiswa emoyeni usebenzisa i-antenna. Ngenxa yoko, ukusebenzisa ezo mveliso nge-eriyali kunokwaphula imithetho yendawo.

Jonga kwiimpawu zoRhwebo ze-NI kunye neziKhokelo zeLogo ku-ni.com/trademarks ngolwazi oluthe kratya kwiimpawu zentengiso ze-NI. Enye imveliso kunye namagama enkampani akhankanywe apha ziimpawu zorhwebo okanye amagama orhwebo eenkampani zabo. Kwilungelo elilodwa lomenzi wechiza ezigquma iimveliso ze-NI/iteknoloji, bhekisa kwindawo efanelekileyo: Uncedo»Iipatenti kwisoftware yakho, ipatents.txt file kumajelo akho eendaba, okanye iSaziso sePatent seSizwe seZixhobo kwi-ni.com/patents. Ungafumana ulwazi malunga nezivumelwano zelayisensi yomsebenzisi wokugqibela (EULAs) kunye nezaziso ezisemthethweni zomntu wesithathu kwi-readme file kwimveliso yakho ye-NI. Jonga kwiiNkcukacha zokuThobela iMpahla kwi-ni.com/legal/export-compliance yomgaqo-nkqubo wokuthotyelwa korhwebo lwehlabathi lwe-NI kunye nendlela yokufumana iikhowudi ezifanelekileyo ze-HTS, ii-ECCN, kunye nezinye iinkcukacha zokungenisa/ukuthumela ngaphandle. I-NI AYIBENZI INGQIQO OKANYE IZIQINISEKISO EZIXHELEKILEYO NGOKUCHANEKA KOLWAZI LUPHATHWE APHA KWAYE AKAYI KUTHWELEKA NAZO NAziphi na iimpazamo. Abathengi bakaRhulumente wase-US: Idatha equlethwe kule ncwadana iphuhliswe ngeendleko zabucala kwaye ixhomekeke kumalungelo aqingqiweyo asebenzayo kunye namalungelo athintelweyo edatha njengoko kuchaziwe kwi-FAR 52.227-14, DFAR 252.227-7014, kunye ne-DFAR 252.227-7015.

Amaxwebhu / Izibonelelo

ILab yeziXhobo zeSizweVIEW Unxibelelwano 802.11 Isakhelo seSicelo 2.1 [pdf] Isikhokelo somsebenzisi I-PXIe-8135, iLebhuVIEW Unxibelelwano 802.11 Isakhelo seSicelo 2.1, iLebhuVIEW UNxibelelwano 802.11 Isicelo, iNkqubo-sikhokelo 2.1, iLebhuVIEW UNxibelelwano 802.11, Isakhelo seSicelo 2.1

Iimbekiselo

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