Abstract：In this paper, an iterative multiuser detection algorithm using partial soft interfenrence cancellation based on detection reliability is proposed. If the a priori information of the transmitted symbols provided by the channel decoder in the previous iteration is larger than a predefined threshold , the detection of these symbols are thought to be reliable and the corresponding MAI (Multiuser Access Interfenrence) can be eliminated from the outputs of the matched filters. This is equal to decrease the number of the interference users, thus the complexity of the iterative multiuser detection algorithm is decreased. Furthermore, when the MAI is moderate and the SNR is high, the computational complexity of this algorithm can be reduced adaptively.
2006, Vol. 28 
