本文提出了一种实用、完整的自适应回波抵消器，可用于实现高速调制解调器的二线全双工传输。
Realization of a practical and integrated adaptive echo canceller applies in high speed full duplex Modem is proposed in this paper.
本文针对ISDN数字用户环路二线全双工的回波抵消传输方式，首先探讨了LMS、VLMS1自适应算法，并在此基础上提出改进的VLMS2算法。
This paper discusses firstly adaptive algorithms of LMS and VLMS1, being used widely in treating the problem of echo cancellation for full-duplex transmission in ISDN digital subscriber's loop.
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