Channel Estimation in MIMO-OFDM Systems by Tracking the Delay-Subspace

摘要：

A time domain channel estimation method in MIMOOFDM systems by tracking the delay-subspace is proposed. The time impulse response is estimated by transmitting known pilot symbols, and the estimation performance is improved by the Givens rotation based delay-subspace tracking and amplitudes tracking based on the LMS filtering. The simulations prove that the time domain channel estimation by tracking the delaysubspace can track faster fading channels, and is more accurate with low complexity.

关键词： Orthogonal frequency division multiplexing (OFDM) Multi-input Multi-output (MIMO) Subspace tracking Low rank adaptive filter

作者: Peng Liu Jianping An Xiangyuan Bu Ronghua Zhou

作者单位: Department of electronic Engineering, School of Information Science and Technology Beijing Institute of Technology Beijing, 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）