高技术通讯2011，Vol.21Issue(3)：309-314,6.DOI:10.3772/j.issn.1002-0470.2011.03.015
适用于无线传感器节点的低复杂度CCVSLMS均衡器研究
Research on lower-complexity CCVSLMS equalizer for wireless sensor nodes
摘要
Abstract
In view of the poor performance of steady state error and convergence speed of the least mean squares (LMS) algorithm and the clipped-data LMS or clipped-error I1S (CLMS) algorithm for equalization of wireless sensor nodes, this paper proposes a clipped-data and clipped-error variable step size LMS (CCVSLMS) algorithm. The algorithm carries out clipped-data and clipped-error and builds a linear function relationship between the step size factorμ and the change rate of sign, so it could decrease the contradiction between the convergence speed and the steady state error, and had a less computational complexity. The simulation results confirm that the performance of the algorithm surpasses the LMS algorithm and the CLMS algorithm. Moreover, the digital circuit of the equalizer was designed optimally. In the TSMC 90nm CMOS process, the VLSI synthesis results have shown that the dynamic power is only 12μW andthe cells area is about 1086 by the design compiler (DC) tool. Therefore, the equalizer can satisfy the high sensitivity and lower cost of wireless sensor nodes.关键词
最小均方误差(LMS)算法/CLMS算法/均衡器/VLSI优化/无线传感器节点Key words
least mean squares (LMS) algorithm/ CLMS algorithm/ equalizer/ VILSI optimization,wireless sensor node引用本文复制引用
刘述钢,刘宏立,王彦,朱凡..适用于无线传感器节点的低复杂度CCVSLMS均衡器研究[J].高技术通讯,2011,21(3):309-314,6.基金项目
863计划(2007AA11A121)资助项目. （2007AA11A121）
