code diveejan malteepal ekses

code diveejan malteepal ekses (IS-95 CDMA) digital selular seva ke liye ek maanak hai. vishv mein mobile praniyon mein sabse vyaapak roop se teen digital wireless telephone pranaaliyaan prachaalan mein hain:-

mobile aavrutti range Rx: 869-894, TX: 824-849
bahu abhigm vidhi CDMA / FDM
dvaidh Method FDD
sankhya channel ka channel ke anusaar 20 (798 upayogakarta)
channel khaali sthaan 1250kHz
maudulan QPSK / OQPSK
channel bit dar 1.2288Mb

anukram

kaarya pranaali

CDMA pranaali mein, enakoded aavaaj dijeetal hoti hai aur paiketon mein vibhaajit ki jaati hai. ye packet code ke saath taig kiye hote hain. sabhi packet sthaaneeya CDMA network mein se apne packet ko mishran ke roop mein apne gantavya ki or bhejate hain. is pranaali mein keval praapt code wala packet ki sveekaar kiya jaata hai. CDMA praudyogiki ke kshetr mein prayog kiya jaata hai, jabki teedeeemae (time diveejan malteepal ekses) takaneeki pratiyogita mein praudyogiki GSM mein prayog kiya jaata hai.. IS-95 mein bhi TIA roop EIA-95 mein jaana jaata hai.. mool IS-95 CDMA vinirdesh ab cdmaOne ke roop mein bheja jaata hai. naya CDMA maanak naya CDMA maanakon cdma2000, CDMA 1X EV, CDMA 1XEV-karo, CDMA M si 3X, WCDMA aur TD-SCDMA shaamil hain. CDMA-2000 1xRTT CDMA par networking-2000 netavarkon ke liye haal hi mein ek maanak hai.PANKAJ NIRMALKAR

CDMA network oparetar

olatel, verijon wireless, America selular aur kvest sanchaar sanyukt raajya America ke bheetar CDMA netavarkon par kaarya karte hain. vishv bhar mein, vahaaain se 60 lakh se adhik upayogakartaaon ko seva upalabdh kara rahe hain.

dekhein

baahari kadiyaaain