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Power control for diversity reception in time-division duplex CDMA

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2 Author(s)
Ghauri, I. ; Mobile Commun. Dept., Inst. Eurecom, Sophia Antipolis, France ; Knopp, R.

Power control possibilities are explored for the downlink of a time-division duplex (TDD) CDMA system while employing three different kinds of multipath diversity combining schemes namely the RAKE, the pre-RAKE and the transmit antenna pre-selection. In the latter two, knowledge of the channel characteristics is employed at the base-station to provide maximum decoupling between users on the downlink. Performance of the these receivers is compared in a Rayleigh fading urban environment. It is shown that power control is absolutely indispensable in the latter two schemes and results in considerable performance gains as compared to the RAKE receiver

Published in:

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE  (Volume:3 )

Date of Conference:

18-21 May 1998