一种改进的自适应并行干扰抵消算法

An improved adaptive parallel interference cancellation algorithm

分析了LMS算法用于部分并行干扰抵消器(PIC)的不足,提出了一种采用变步长LMS自适应算法的改进方案。该方案利用变步长自适应算法收敛速度快且具有较小稳态误差的特点,使计算出来的部分干扰抵消系数更可靠。实验结果表明,本文提出的改进方案,在误码率性能方面优于传统PIC方法。

This paper discusses the problem caused by application of LMS algorithm to partial parallel cancellation, and presents an improved scheme using variable step values LMS adaptive algorithm. As the variable adaptive algorithm has faster convergence velocity and low error on steady state, cancellation factors calculated by the algorithm are more reliable. The computer simulation results confirm that bit error probability of the improved scheme in this paper outperforms conventional PIC scheme.