Title :
The effect of channel estimation errors on RAKE receiver performance in WCDMA systems
Author :
Adnani, N.V. ; Hafez, R.H.M. ; Bultitude, P. M C
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
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.
Keywords :
3G mobile communication; Gaussian distribution; channel estimation; error statistics; multipath channels; radio receivers; telecommunication terminals; thermal noise; Gaussian approximations; RAKE finger selection; RAKE receiver performance; WCDMA systems; bit error rates; channel estimation errors; downlink; mobile terminal; multipath propagation; self-interference; signal-to-noise ratio; thermal noise; threshold;
Conference_Titel :
3G Mobile Communication Technologies, 2003. 3G 2003. 4th International Conference on (Conf. Publ. No. 494)
Print_ISBN :
0-85296-756-X
DOI :
10.1049/cp:20030361
