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

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.