| Paper: | SPCOM-P11.5 | ||
| Session: | CDMA and Spread-Spectrum Systems | ||
| Time: | Friday, May 21, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Multiuser Detection and Signal Separation | ||
| Title: | PERFORMANCE OF CDMA RECEIVERS UNDER IMPERFECT CHANNEL ESTIMATION | ||
| Authors: | Zhengyuan Xu; University of California, Riverside | ||
| Abstract: | In a CDMA system, imperfect channel estimation causes performance degradation of a minimum mean-square-error (MMSE) receiver. This paper studies effects of channel estimation error on the performance of direct matrix inversion (DMI) MMSE receiver and subspace MMSE receiver when channel parameters are estimated by a covariance-matching technique based on finite data samples. Receivers' output signal to interference plus noise ratios (SINRs) and bit-error-rates (BERs) are adopted for performance measures. Those performance indicators under such an imperfect condition are derived from a perturbation perspective and verified by simulation examples. | ||
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