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The effect of channel estimation errors on RAKE receiver performance in WCDMA systems

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3 Author(s)
Adnani, N.V. ; Commun. Res. Centre, Ottawa, Ont., Canada ; Hafez, R.H.M. ; Bultitude, R.J.C.

The performance of a RAKE receiver in a mobile terminal is analysed for a WCDMA downlink. Bit error rates as a function of signal-to-noise ratio are computed for the case when channel estimates are in error as a result of self-interference due to multipath propagation and thermal noise. Channel estimation errors are described using Gaussian approximations for interference and noise, while the effects of self-interference on the data are computed exactly. Results are compared with the case when the receiver has perfect channel knowledge and used to determine a threshold for RAKE finger selection in practical systems.

Published in:

3G Mobile Communication Technologies, 2003. 3G 2003. 4th International Conference on (Conf. Publ. No. 494)

Date of Conference:

25-27 June 2003