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Forward channels in CDMA

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  • #48216 Reply
    Anni Sharma

    Good Morning Friends,

    can anyone tell the meaning of the following terms:

    Role of Pilot channel,

    I am looking forward for your replies.

    Anni Sharma

    #48217 Reply
    Manu Katyal

    well anni,

    Ec/Io is the total Energy per chip divided by the total inference in the 1.25 Mhz spectrum(whole CDMA spectrum).It should be above a certain value so that the mobile can be distinguished by the BTS.

    In CDMA Tech.

    Forward Channels-

    -Pilot Channel
    -Paging Channel
    -Sync Channel
    -Traffic Channel

    Reverse Channels-

    -Access Channel
    -Reverse Traffic Channel

    Pilot Ch.- The pilot channel is used by the mobile unit to obtain initial system synchronization and to provide time, frequency, and phase tracking of signals from the cell site.

    #48218 Reply
    Manu Katyal

    Moreover Pilot Channel uses Walsh Code 0(i.e. W0)

    Paging Channel uses W1-W7
    Sync Channel uses W32 &
    Traffic Channel make use of W8-W31 & W33-W63.

    But i can’t understand wats SOP??????

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