基于对角块分解的下行方向快速预编码算法  

Fast crosstalk precoder based on structured matrix splitting for downstream transmission

作　　者：李有明[1] 沈微[1] 王让定[1] 李新苗[1] 

机构地区：[1]宁波大学通信技术研究所,浙江宁波315211

出　　处：《通信学报》2009年第6期103-107,共5页Journal on Communications

基　　金：国家自然科学基金资助项目(60772126;60672070);教育部留学回国人员科研启动基金资助项目(2006698);浙江省教育厅留学回国基金资助项目;国际合作项目(2009DFA12120)~~

摘　　要：利用同一电缆包中布线的空间特殊性,提出一种抑制下行传输方向串音的预编码算法。一方面由于算法中仅涉及二阶矩阵的逆,运算量很小,易于实现。另一方面,此方法性能优于之前提出的一阶逼近算法,而与三对角线逼近算法性能相近,但运算量要小得多。基于实测数据的计算机仿真验证了结果的正确性。Based on special line position, a novel precoder of cancellation crosstalk for downstream transmission was proposed. As the new method needs only two order matrix inversion, the precoder had a much lower computational complexity and was easy for implementation. In addition, the performance of the precoder was superior to that of the first order algorithm, almost the same tri-diagonal precoder. Computer simulation results based on real measured data verify the efficiency of the proposed precoder.

关 键 词：数字用户线 VDSL2 串音抑制 预编码 

分 类 号：TN914.3[电子电信—通信与信息系统]