基于RLS-Laguerre的自适应滤波同址干扰抵消算法

Adaptive Cosite Interference Cancellation Using RLS-Laguerre Filter

针对在有限空间内多部电台同时工作所产生的同址干扰问题,提出了一种RLS-Laguerre自适应同址干扰抵消算法,充分利用了RLS算法在实际的工作环境中跟踪速度快的特点以及Laguerre滤波器结构的优点。仿真结果表明,相较于LMS及LMF/S-Laguerre算法,该算法在高斯信道及莱斯信道中具有更快的跟踪速度、更好的抵消性能和稳定性。

According to the rapid tracing speed of RLS algorithm in actual working environment and the laguerre filter is the combina tion of advantages of FIR filter and IIR filter, this paper proposed an RLS-Laguerre adaptive filter algorithm based on Laguerre filter to fulfill cancellation of cosite interference. Besides, it analyzs its performance and algorithm as well as compares to the performance of other kinds of algorithm such as I.MS. LMF/~Laguerre. Both the theoretical analysis and the simulation result proved that the RLS-Laguerre algorithm is better than I.MS and LMF/S-Laguerre algorithm since it has good properties in cancellation and faster convergence speed as well as a more steady performance.