Simplified Channel Estimation Method for OFDM Systems in Fast Fading Channels

摘要：

In frequency-selective fast fading channels, large Doppler spread and multi-path interference can reduce the precision of channel estimation seriously. We develop a channel estimation method for orthogonal frequency division multiplexing (OFDM) systems based on Kalman filter and pilot tracking. The low-dimensional Kalman-fifter estimator greatly reduces the complexity of the high-dimensional Kalman filter.We implement least square (LS) estimator to track variable channel fading factor a. The simulation results in the frequency band of 5.5GHz show that the proposed method achieves a good performance close to the theoretic bound of ideal channel estimation.

关键词： Channel estimation OFDM Kalman LS MMSE

作者: Xiaojin Song Tiecheng Song Su Lu Lianfeng Shen

作者单位: National Mobile Communications Research Laboratory Southeast University Nanjing 210096,China

会议类型: 国际会议

会议名称: 2005年无线通信、网络和移动计算国际会议

会议地点: 武汉

会议语种:英文

页码: 217-221

在线出版日期: 2005-09-23（万方平台首次上网日期，不代表论文的发表时间）