摘要
介绍了单载波频域均衡(SC-FDE)系统以及SC-FDE所常用的频域块最小均方(FBLMS)算法。为了进一步改进单载波频域均衡系统的性能,基于抽头泄漏的思想,通过增加抽头的泄漏进一步优化了FBLMS算法,并对基于优化算法的单载波频域均衡系统进行了计算机仿真模拟。其仿真结果表明:与常用算法相比较,该优化算法能有效提高均衡器的收敛速度和显著改善均衡器消除符号间干扰(ISI)的性能。
This paper introduces the system of single cartier frequency domain equalization（SC - FDE） ancl the frequency - domain block least - mean - square （FBLMS） algorithm for SC - FDE. In order to improve the performance of SC - FDE, this paper father optimizes FBLMS algorithm by adding leak into algorithm based on the thinking of leak, and then simulates the system of SC - DFE which uses the optimized algorithm. The simulation results show that the optimized algorithm has advantages in both convergence speed of equalizer and the performance of equalizer which is used to eliminate the intersymbol interference over the conventional FBLMS algorithm.
出处
《信息技术》
2006年第5期12-15,共4页
Information Technology
基金
上海科委基金项目(03DZ05020)
关键词
单载波
频域均衡
泄漏
FBLMS算法
符号间干扰
single carrier
frequency domain equalization
leak
FBLMS algorithm
intersymbol interference
