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Need for WCDMA

Viewing 4 posts - 1 through 4 (of 4 total)
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  • 18th September 2008 at 04:50 #53887
    MKT
    Guest

    Hi,

    If CDMA 1.25Mhz is capable of delivering speed up to 10 Mbps then

    why CDMA(5Mhz) = WCDMA is choosen?

    Regards

    18th September 2008 at 07:09 #53888
    pix
    Guest

    hi mkt,

    CDMA2000 works on 1.25 MHz, while WCDMA works on 5MHz. Both technologies are incompatible. So if your network is in CDMA2000, it won’t accept WCDMA..
    CDMA2000 : US patented, easy evolution from 2G to 3G

    WCDMA: no patents, open technology, difficult evolution from 2G (from GSM…). Regarded as worldwide standard.

    18th September 2008 at 07:20 #53889
    Raul
    Guest

    Hi Pix,
    What is the difference between UMTS and WCDMA?

    18th September 2008 at 07:21 #53890
    MKT
    Guest

    What i mean to say was that when it was felt that existing 2G TDMA/FDMA air interface is not capable to support 3G data rates a need for different air interface standard was felt.

    They could have choosen CDMA 2000 instead of going for WCDMA.

    As going with former you need only 1.25 Mhz of BW whereas in case of latter you need 5Mhz spectrum,

    Spectrum is a limited resource.

    regards

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Viewing 4 posts - 1 through 4 (of 4 total)
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