MIMO OFDM系统中色散信道的时域跟踪方法

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). Pub Date : 2003-07-06 DOI:10.1109/ICASSP.2003.1202662

T. Roman, M. Enescu, V. Koivunen

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引用次数: 24

摘要

本文研究了面向移动用户的多输入多输出OFDM系统的信道估计问题。针对时频选择信道，提出了一种基于卡尔曼滤波的信道跟踪均衡方法。在时域对MIMO信道矩阵进行跟踪，在频域进行均衡。利用矩阵反演引理，大大降低了计算复杂度。在典型的城市场景下，给出了一个真实的通道模型的仿真结果。

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Time-domain method for tracking dispersive channels in MIMO OFDM systems

In this paper we address the problem of channel estimation for multiple-input multiple-output OFDM systems for mobile users. A channel tracking and equalization method stemming from Kalman filtering is proposed for time-frequency selective channels. Tracking of the MIMO channel matrix is performed in the time-domain and equalization in the frequency domain. The computational complexity is significantly reduced by applying the matrix inversion lemma. Simulation results are presented using a realistic channel model in typical urban scenarios.

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来源期刊

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).

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