多级并行干扰抵消算法的CDMA系统性能分析

摘要

分析了多级并行完全干扰抵消算法和多级并行部分干扰抵消算法应用于存在定时误差的CDMA系统中的性能。建立了系统信号模型，给出计算误码率的公式。作了在有远近效应情况下的性能比较。得出多级并行干扰抵消算法比传统的单用户检测性能优越，部分干扰抵消算法比完全干扰抵消算法性能优越的结论。%The performance of the application of the algorithms of multistage parallel complete interference cancellation and multistage parallel partial interference cancellation to CDMA system with timing errors is analyzed. The system signal model is set up, and the relevant formulas are given out. The performance comparison under the effects of near-far is also investigated. It is concluded that the performance of the algorithm for partial interference cancellation is higher than that of complete interference cancellation.