
doppler alasyam cheyandi

delay doppler coordinatelu anevi saadhaaranamgaa kolataku radar saanketikata-prerepita vidhaanamlo upayoginche coordinatelu. wireless communicationlo upayoginchinappudu, delay doppler domine wireless chaaneltho kuudina reflectorla jyaamitini pratibimbistumdi, idhi vaegamgaa maarutunna time-frequency domainlo anubhavinche dasha maarpula kante chaalaa nemmadigaa maarutundi.
doppler signal praatinidhyaanni alasyam cheyandi.
radar siddhaantamlo, delay doppler chararaasulu vaati delay (paridhi) mariyu doppler (vegam) lakshanaala dwara kadile lakshyalanu suuchimchadaaniki mariyu vaeru cheyadaaniki upayoginchabadataayi. communicationlo, chararaasulu samayam mariyu frequency shift karyakalapala yokka superposition dwara chaanellanu suuchistaayi.
delay doppler variables kooda samacharam-mosukelle sankethaalanu suuchistaayi. konnisaarlu heisenberg samuuham yokka jaalaka praatinidhyam anie piluvabade delay doppler signal praatinidhyam, oka konamlo saampradaaya samayam mariyu pounahpunya praatinidhyaala yokka misramam.
samaya praatinidhyamlo, oka signal samayam yokka function (delta functionla superposition) gaa grahinchabadutundi; frequency praatinidhyamlo, signal frequency function (sanklishta ghaataankaala superposition) gaa grahinchabadutundi.
samayam mariyu pounahpunya praatinidhyaalu okadaanikokati paripuurakaramainavi. eee paripuurakata yokka ganita vyakteekarana heisenberg anischiti suutram dwara sangrahinchabadutundi, idhi oka sanketaanni ekakaalamlo samayam mariyu pounahpunyamlo yea kaavalasina sthaayiki sthaanikeekarinchalemani perkondi. dheeniki viruddhamgaa, delay doppler praatinidhyamlo, sthaanikeekarinchina pulls lanu nirminchavacchu, ivi samaya mariyu pounahpunyamlo ekakaalamlo sthaanikeekarinchabadinatluga pravartistaayi. atuvanti delay-doppler palsnu delay doppler radar multy-target detection mariyu wireless communication kosam samarthavantamgaa upayoginchavacchu.
communication sandarbhamlo, chhaanel yokka delay-doppler praatinidhyam yokka mukhya lakshanam emitante, bahula-carrier paddhatulu upayoginche saampradaaya time-frequency chhaanel praatinidhyamlo unna vegavantamaina dasha maarpulanu idhi anubhavinchadu (anki chudandi. 1). eee roganirodhaka shakti chaanal vruddhaapya prakriyanu mandagistundi, idhi myuu-mimo [4] [9] mariyu cran vanti podiginchina jaapyam avasaramayye vividha network vidhulaku chikkulanu kaligi untundi.
application.
myuu-mimo nirmaanamloo delay-doppler chaanal praatinidhyam tagina vidhamgaa cherchabadinappudu, idhi telivaina user jatalu mariyu snr anchanaalu vanti chinna-kaani network kaaryaacharananu praarambhistundi.
eee kaaryaacharanalu edainaa tarangaruupaaniki merugaina varnapata viniyogam mariyu paniteeruku daariteestaayi, tadwara mobile networkla kosam varnapata gunakam yokka saarvatrika saanketika parignaanaanni yerparustaayi, ivi fdd mariyu tdd rendintiloonuu mariyu yea generation networktho ayina panicheyagalavu. 
delay doppler chaanal praatinidhyam Srs & dmrs vanti ippatike unna uplink reference signalsnu upayogistundi, aavartana Dl cqi nivedikalato paatu balamaina rekhaganita samacharanni sekarinchadaaniki mariyu downlink sinrnuu lekkinchadaaniki mariyu downlink csiని anchanaa vaeyadaaniki-jatha chesina fdd spectrum meeda kooda 400mhz varaku vaeru cheyabadutundi. chaanal samaachaaraaniki srs keelaka vanaru. prati viniyogadaaruku link gurinchi balamaina rekhaganita samacharanni sekarinchadaaniki delay doppler prosessing paddhatulu upayoginchabadataayi, khachitamaina dl cnr anchanaanu alaage khachitamaina dl csi (frequencylo extrapolate cheyabadi, samayaniki anchanaa veyabadindi) nuu istundi.
daani rekhaganita swabhaavam kaaranamgaa, nemmadigaa maarutunna doppler chaanal praatinidhyam kaaryaacharana vibhajanaku talupulu terustundi. pratyaekamgaa, chaanal anchanaalu sumaru 50-100 milliseconla (paryaavaranaanni batti) khachitamainavigaa untaayi. idhi cloude runn mariyu intercel coordination dwara sell edge paniteerunu meruguparachadaaniki foundationku veelu kalpistundi. software oo-raan nirmaanamloo oka xap gaa real time runn intelligent controller (rick) loe nivasinchagaladu mariyu hyper-viswasaneeya, takkuva jaapyam 5zii avasaralaku maddatu ivvagaladu. atuvanti softwarenu edainaa x86-aadhaarita platformlo kooda amalu cheyavachu mariyu ippatike unna bays stationlalo vileenam cheyavachu ledhaa nirvachinchina interfacela dwara ippatike unna bays stationla pakkana moharinchavachhu.
wireless chaanellanu delay-doppler domainlo praatinidhyam vahinchinappudu mariyu proses chesinappudu, 4zii mariyu 5zii netvarklu tdd mariyu efdidi rendintiloonuu myuu-mimoni samarthavantamgaa upayoginchagalavu, mariyu chaanal kolatalu jaapyam (cloude), chaanal balaheenatalu mariyu adhika chalanaseelataku marinta balamgaa maarataayi.