移动通信中的回波抵消算法分析

Analysis on Echo Cancellation Algorithm in Mobile Communication

移动通信领域中已广泛采用自适应回波抵消技术,自适应回波抵消算法是该技术的核心,算法的优劣直接影响自适应回波抵消效果,同时它对降低硬件复杂度和产品成本也有特殊意义。文章对自适应回波抵消的NLMS算法、双端讲话(DT)的检测算法及后处理的NLP算法进行了分析和讨论。

In the mobile communication domain, adaptive echo cancellation has been widely used with the algorithm of adaptive echo cancellation as its key technology. Quality of algorithm will have direct effect on the result of cancellation, and good algorithms will reduce system complexity and lower the cost of product. The paper gives an analysis on the key algorithm of adaptive echo cancellation NLMS , algorithm of double talk detection, and algorithm of nonlinear processing.