宁波大学信息科学与工程学院,浙江,宁波,315211
纸质出版:2010
移动端阅览
李有明, 沈 微, 张敬燕, 等. 上行传输中的迭代串音抑制算法[J]. 电子学报, 2010,38(8):1941-1944.
LI You-ming, SHEN Wei, ZHANG Jing-yan, et al. Iterative Crosstalk Cancellation Algorithm for Upstream Transmission[J]. Acta Electronica Sinica, 2010, 38(8): 1941-1944.
串音是影响VDSL2传输速率的主要因素.针对上行传输中的串音干扰
利用矩阵分裂技巧和迭代原理
提出了一类低复杂度
高效的迭代串音抑制算法.同时根据串音信道传输矩阵的对角占优和列对角占优特性
重点研究了对角分裂迭代算法和上三角分裂迭代算法.根据上行传输的信道传输矩阵特点可以推断
基于上三角分裂的迭代算法性能最优.新算法通过逐次迭代使得性能逼近置零算法
而优于一阶逼近算法
且其一步迭代的运算量与一阶逼近算法相当.基于实测数据的计算机仿真结果验证了新算法的有效性.
Crosstalk is the major limiting issue in VDSL2 system.A class of low complexity and effective iterative crosstalk cancellation algorithms based on matrix splitting and iterative theory are proposed for VDSL2 upstream transmission.Two special iterative algorithms based on diagonal matrix splitting and up triangular matrix splitting are discussed
as the two splitting inspired from using the channel matrix property of diagonal dominant and column wise diagonal dominant respectively.These results reveal that the iterative method based on up triangular matrix splitting is superior to other iterative algorithms
and its performance approaches zero forcing algorithm
but the complexity in each iteration step is almost the same as first order algorithm.Computer simulation results based on measured data verify the efficiency of the new proposed method.
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