CAJ | 학술논문

实际通信线路中脉冲性噪声常使得基于高斯噪声模型的经典自适应回波抵消方法的效果变差。针对该问题，提出了一种基于α稳定分布模型的鲁棒性自适应回波抵消方法（RAEC）。该方法采用p稳定分布建模脉冲噪声，在最小平均p范数准则下，利用自适应时间延迟估计器来抵消回波，不仅可以有效地抵消通信线路中含有高斯噪声的回波，而且对含有脉冲噪声的回波也有良好的抵消效果。理论分析和计算机仿真实验表明，RAEC是一种对脉冲噪声具有鲁棒性的自适应回波抵消方法。
실제통신선로중맥충성조성상사득기우고사조성모형적경전자괄응회파저소방법적효과변차。침대해문제，제출료일충기우α은정분포모형적로봉성자괄응회파저소방법（RAEC）。해방법채용p은정분포건모맥충조성，재최소평균p범수준칙하，이용자괄응시간연지고계기래저소회파，불부가이유효지저소통신선로중함유고사조성적회파，이차대함유맥충조성적회파야유량호적저소효과。이론분석화계산궤방진실험표명，RAEC시일충대맥충조성구유로봉성적자괄응회파저소방법。
Impulsive noise exists in communication lines, making the performance of tradition-al adaptive echo cancellation based on Gaussian distribution poor. To solve the problem, this pa per presents a robust adaptive echo cancellation method, RAEC, which is based on the Alpha sta ble distribution. Under the least mean p-norm criterion, echo is cancelled by using an adaptive time delay estimator. This method can effectively offset echo in communication lines not only in the presence of Gaussian noises, but also in the presence of impulse noises. Theoretical analysis and computer simulation show that RAEC is a robust adaptive echo cancellation method for im pulse noise.