Turbo-coded blind Per-survivor processing multiuser detection CDMA

Joint data and blind channel estimation based on the principle of Per-survisor Processing (PSP) is invoked and characterised in the proposed turbo-coded multi-user detection assisted Code Division Multiple Access (CDMA) system. The turbo-coded blind PSP receiver invoked the likelihood function in its metric calculations over the Typical Urban (TU) time-variant COST 207 fading channel fluctuating at Doppler frequencies between 0.8Hz and 80Hz. The size of the turbo interleaver was shown to be critical as regards to the overall system performance and for a rectangular turbo interleaver size of 55x55 bits in conjunction with a 100x100-bit or 156x156-bit channel interleaver no transmission errors were recorded for the above two Doppler frequencies over the COST 207 TU fading channel.