SC-FDE系统中用于快时变信道的改进的RLS信道预测  

Improved RLS Prediction in Fast Time-varying Channels for SC-FDE System

作　　者：王丽丽 

机构地区：[1]中国网通集团有限公司烟台开发区分公司,山东烟台264006

出　　处：《系统仿真学报》2007年第20期4751-4754,共4页Journal of System Simulation

摘　　要：针对现有的时变信道递归最小二乘(RLS)预测算法收敛慢的问题提出了一种单载波频域均衡(singlecarrier–frequency domain equalization,SC-FDE)系统中改进的自适应RLS预测算法。这种预测算法依靠置零小能量路径使预测器在高输入信噪比下工作,和现有的RLS预测算法相比可以显著加快收敛速度,提高预测精度,并且比现有的RLS算法有更低的复杂度。In order to speed the convergence rate of the existing RLS prediction in time-varying channels, an improved adaptive RLS prediction for single carrier-frequency domain equalization （SC-FDE） system was proposed. The main idea is to make the predictor operate at high input SNR by nulling the negligible paths. The proposed predictor not only speeds the convergence rate, but also improves the prediction accuracy. And the complexity of the proposed predictor is reduced.

关 键 词：时变信道 递归最小二乘 信道预测 单载波频域均衡 收敛速度 

分 类 号：TN929.5[电子电信—通信与信息系统]