Abstract
该文基于m序列设计了一种适合多天线收发-正交频分复用(MIMO-OFDM)系统的时域信道估计新方法。在时域OFDM符号之间插入附加循环前缀(CP)的m序列作为训练序列，在接收端将去掉循环前缀的接收序列与指定的循环移位m序列作相关运算，然后利用m序列的二值自相关特性获得信道的冲激响应估计，从而得到信道的频率响应估计。理论分析和仿真结果都表明：在频率选择性信道中，新方法在系统开销小、计算复杂度低的情况下可以取得比传统算法更好的性能。
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