EFFECT OF SYSTEM IMPERFECTIONS ON BER PERFORMANCE OF A CDMA RECEIVER WITH MULTIPATH DIVERSITY COMBINING

The bit error rate performance of a high chip rate, indoor code divisi on multiple access multipath combining receiver with imperfections in power control, estimation of channel parameters (path amplitude and ph ase), and estimation of spreading code phase is analyzed, imperfection in power control is taken into account by modeling the received signa l power as a log normally distributed random variable, The estimate er rors are modeled as zero mean Gaussian random variables. It is shown t hat the performance of such a receiver degrades when the variance of p ower control imperfection is above 0 dB, mean square error in channel parameter estimation is above 0.01, or standard deviation of the code phase error is above 0.1.