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  • #44273 Reply

    Is anybody using 8-PSK modulation on the BCCH TRX?? There guys from ETSI clearly acknowledging, that using 8-PSK can affect neighbor cell measurement for MS in other cells.This is because of the fact that Time Slot using 8-PSK has generally 2-4dB lower power than the one using GMSK.

    Has anybody implemented 8-PSK on BCCH ans seen it’s impact ??

    #44274 Reply

    We are using 8-PSK only on BCCH as this is the freq with less interference and no power control. The neighboring slots of the BCCH 1,7 are not using 8-PSK.
    We have no problems at this point.
    Where you saw this about ETSI. I have to check but I think Siemens recommend EDGE CU to be the BCCH one.

    #44275 Reply
    Arindam Dey

    Hi There,
    Well, here are the two links you can check…

    This one is a correspondence among 3GPP members . You can also check page 93 in Siemens Document titled GPRS/EGPRS Global Description.

    The next link discusses about EDGE in general Unfortunately this link is down most of the time, but you can try.


    #44276 Reply

    Ask how long it will be before you can go back to work or start regular exercise again. ,

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Reply To: EDGE and GPRS
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