Iterative LS Channel Estimation for OFDM Systems Based on Transform-domain Processing
Channel estimation is crucial for the performance of OFDM systems. In this paper, at first we describe the LS channel estimator based on transform domain processing and an iterative algorithm to improve the performance of channel estimator. Both of them could remove the additive Gaussian noise in the LS channel estimate effectively. Then we nitially pply this iterative algorithm to the introduced transform-domain based LS channel estimator. We also introduce a decision-directed process to the channel estimator to further improve the estimation accuracy. Simulation results show that the new estimator performs better than the former ones.
Su Wei Pan Zhiwen
National Mobile Communications Research Laboratory Southeast University Nanjing, Jiangsu, China 210096
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）