Optimal Channel Tracking for OFDM Systems in Double-selective Fading Channel

摘要：

An algorithm which uses the Kalman filter to estimate the time-varying fading coefficients in orthogonal frequency division multiplexing (OFDM) systems is addressed. The algorithm is based on a parametric channel model where the channel response is characterized as a collection of sparse propagation paths. We investigate into how to estimate the channel by the Kalman filter in the pilot-aided OFDM wireless system. To reduce the complexity of the high-dimensional Kalman filter for channel estimatior, we consider a lowdimensional Kalman filter for the channel estimation. It is shown that the algorithm is effective for the estimation of the OFMD time-varying fading channels when the performance of the channel estimation is presented in terms of the mean-square error(MSE).

关键词： channel modeling Kalman filter channel estimation OFDM

作者: Linhai Li Jing Chen Hanying Hu Hongyi Yu

作者单位: Dept. of Commun. Engineering, Zhengzhou Information Science and Technology Institute Zhengzhou, Henan,P.R.China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）