Kalman filter channel estimation based on comb-type pilot in time-varying channel

摘要：

In OFDM systems, time-varying channels destroy the orthogonality between sub-channels and cause interchannel interference (ICI). To compensate for this ICI, a kalman filter based on comb-type pilot signal is proposed for channel estimation. The fast and frequency-selective fading channel is modeled as a one-order autoregressive (AR) process to reduce the complexity. Meanwhile, the result is refined using frequencydomain correlation and covariance matrix of estimation error in minimum mean-squared error sense. The simulation results show that this channel estimation method can achieve good performance.

关键词： OFDM Channel estimation Kalman filter MMSE

作者: Wang Ling Liang Ting

作者单位: College of Electrical and Information Engineering Hunan University Changsha,China

会议类型: 国际会议

会议名称: 第二届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 武汉

会议语种:英文

在线出版日期: 2006-09-01（万方平台首次上网日期，不代表论文的发表时间）