Low-complexity Parameter Update for Spatio Temporal Filter to Suppress the Cochannel Interference in MIMO-OFDM Mobile Communication System
This paper proposes a low-complexity parameter update algorithm to spatio-temporal filter for suppressing the cochannel interference in multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) modulation systems. The conventional spatio temporal filter employs the recursive eigenvalue decomposition algorithm to perform the parameter estimation and update, in the mobile environment, all the points during a data OFDM symbol are used for parameter update. This paper proposes an incomplete parameter update for the conventional spatio-temporal filter, where only a fraction of points during a data OFDM symbol are used for parameter update, while the others are ignored. In this way, the computational complexity of the parameter update can he reduced to some extent with negligible performance degradation. Computer simulations under IEEE 802.11a demonstrate the validity of the proposed incomplete parameter update algorithm.
MIMO-OFDM cochannel interference spatio-temporal filter reduced-complexity parameter update
Lisheng Fan Yongquan Jiang
Department of Electronic Engineering, Shantou University
国际会议
2009 International Workshop on Information Security and Application(2009 信息安全与应用国际研讨会)
青岛
英文
193-196
2009-11-21（万方平台首次上网日期，不代表论文的发表时间）