Channel reliability in turbo-coded DS/CDMA systems under Rayleigh fading channels

This work proposes a general equation for the channel reliability (L
_c
) of DS/CDMA turbo coding systems under fading Rayleigh channels and multiple access interference. The proposed reliability equation is suitable for low, medium as well as high signal-noise ratio (SNR) system operation conditions. The L
_c
equation is established as a function of the ratio of active users and the processing gain (loading system, Q) and SNR from fitting of Monte-Carlo simulation (MCS) performance results. The suggested L
_c
equation propitiated a lower error rate performance over all SNR operation regions when compared with the previous literature results, considering different loading and coding rate conditions.