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本文研究了自适应非线性滤波在直扩通信中抑制窄带干扰的应用，修正了Ｖｉｊａｙａｎ和Ｐｏｏｒ所采用的抽头更新算法，使非线性滤波的性能明显改善。同时把自适应非线性横向滤波结构推广到Ｌａｔｔｉｃｅ结构，提高了收敛速度。
In this paper, the application of adaptive nonlinear filtering to suppress narrowband interference in DSSS communication is studied, and the tap update algorithm adopted by Vijayan and Poor is modified to improve the performance of nonlinear filtering significantly. At the same time, the adaptive nonlinear transverse filter structure is extended to the Lattice structure, which improves the convergence speed.