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Performance of CDMA Receivers Under Imperfect Channel Estimation

Overview 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.

Further White Paper Details
Publisher	University of California	File Format	PDF
Date Published	January 2004
Format	White Papers
Topics	Mobile - Wireless Communications, TDMA - CDMA

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