Turbo multiuser detection for coded asynchronous DS-CDMA over frequency selective channels

In order to achieve performant but low-complexity multiuser detection for coded signals, we propose to use a full turbo-CDMA structure. Noticing that a good order of demodulation is very effective in improving performance, we propose a new criterion for the order of demodulation in an asynchronous and frequency selective CDMA context. It takes into account both intersymbol and multiuser interference.