MSE and BER performances of LMMN receiver in DS-CDMA over frequency-selective slow Rayleigh fading channels

This paper investigates the performance of using the Least-Mean-Mixed-Norm algorithm (LMMN) in the adaptation of asynchronous DS-CDMA slow fading, non-linear receiver. The investigations study the effect of using various mixing parameter (λ) and step-size (μ) on the performance of the proposed algorithm in terms of mean-square error (MSE) and bit-error-rate (BER). Computer simulation results indicate that LMMN with lamda (K) equals 0.9 and step-size (μ) equals 5×10^-3 give the best performance. Moreover it is demonstrated that non-linear receivers adapted by the proposed algorithm have faster convergence rate and similar BER performance, in comparison with the NLMS adaptive receiver.