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bhq
Joined: 11 Jun 2008
Posts: 81
Helped: 7
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 18 Jun 2008 11:41 Difference Between WCDMA and CDMA ?? |
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Please any one tell me what is the difference between CDMA and WCDMA ? and what is CDMA 2000 Standard.
At what frequencies they operate, what is the data rate for each of tham, what they support, i mean, they support Vedio conferencing or not? and waht about its features
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joinfaisal
Joined: 28 Mar 2005
Posts: 45
Helped: 1
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| 18 Jun 2008 15:10 Difference Between WCDMA and CDMA ?? |
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| you asked too many questions at one time. But I can quickly tell you the basic difference. CDMA is a complete cellular system which was employed for 2G and now for 3G network. CDMA2000 is the version of CDMA system for 3G. WCDMA is the physical layer technology adopted for 3G UMTS system. The difference between CDMA and WCDMA in term of physical layer spreading is that in CDMA system signal is spread upto 1.25 MHz( I am not sure about actual value ) while in WCDMA signal is spread upto 5MHz band. Hence extra "W" meaning "wide" is used and hence called as WCDMA.
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xulfee
Joined: 27 May 2008
Posts: 230
Helped: 25
Location: Pakistan
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| 11 Aug 2008 7:54 Difference Between WCDMA and CDMA ?? |
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| one is from 2G n other from 3 G,
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tjtobs
Joined: 28 Aug 2008
Posts: 3
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| 18 Sep 2008 17:37 Re: Difference Between WCDMA and CDMA ?? |
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| WCDMA (Wideband CDMA) descibes a platform that can be convenient for the deployment of 3G. this is because of its spreading bandwidth -5MHz. Technically, their concept of code allocation is the same. tjtobs
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