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Q.

What do you mean by CDMA?

Tags: cdma
Asked by P Ravi Krishnan, 07 Apr '07 06:30 pm
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Answers (4)

 
1.

CDMA is a hybrid 2.5G / 3G protocol of mobile telecommunications standards that use CDMA, a multiple access scheme for digital radio, to send voice, data, and signalling data (such as a dialed telephone number) between mobile phones and cell sites. CDMA2000 is considered a 2.5G protocol in 1xRTT and a 3G protocol in EVDO.

CDMA (code division multiple access) is a mobile digital radio technology that transmits streams of bits and whose channels are divided using codes (PN sequences). CDMA permits many radios to share the same frequency channel. Unlike TDMA (time division multiple access), a different technique used in GSM and D-AMPS, all radios can be active all the time, because network capacity does not directly limit the number of active radios. Since larger numbers of phones can be served by smaller numbers of cell sites, CDMA-based standards have a significant economic advantage over TDMA-based standards, or the oldest cellular standards that used frequency division multiple acc ...more
Answered by shashidhar jois, 07 Apr '07 07:11 pm

 
  
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2.

Code Division Multiple Access
Answered by sumati gayki, 08 Nov '09 10:06 am

 
  
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3.

Code Division Multiple Access
Answered by Vishwajeet, 07 Apr '07 07:04 pm

 
  
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4.

Code Division Multiple Access
Answered by george johny, 07 Apr '07 06:31 pm

 
  
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