Analysis of a pipelined successive interference cancellation scheme for a DS/CDMA system with various tentative decision strategies

The bit error rate (BER) expressions for a proposed pipelined successive interference cancellation (PSIC) scheme in a direct sequence/code division multiple access (DS/CDMA) system with soft and hard tentative decision strategies are derived analytically, and verified by simulations. The proposed PSIC scheme is a pipelined modification of a successive interference cancellation (SIC) scheme. The proposed scheme has the advantage of a lower decoding delay. The numerical and simulation results show that the proposed PSIC scheme outperforms the SIC scheme. Moreover, the performances with hard tentative decision strategies are better than that of soft ones.