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电子学报  2012 

用户下线时抑制串音的自更新算法

DOI: 10.3969/j.issn.0372-2112.2012.07.014, PP. 1368-1371

Keywords: 第二代甚高速数字用户线,串音抑制,置零算法,用户下线,自更新实现

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Abstract:

串音是影响VDSL2系统传输性能的主要因素.已有的串音抑制算法大都局限于串音用户不变的环境.在实际系统中,用户随时可能下线和上线,导致串音环境发生改变.本文重点研究了有用户下线时的情形,利用矩阵初等变换和矩阵分块,提出了一种抑制串音干扰的自更新置零算法.新算法不仅减少了计算复杂度,同时能保持置零算法的性能.基于实测数据的仿真结果验证了新算法的有效性.

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