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针对多输入多输出(MIMO)系统,提出了一种基于Tucker-2模型的联合信号检测与信道估计方法.所提方法在信源端对每个发送信息符号进行三维编码,该编码方式不仅能获得空间和时间分集,并且使得信源发送信号具备盲检测特性.在信宿端,所提方法通过对接收信号构造Tucker-2模型,并设计2种接收算法拟合该模型,从而实现了信息符号和信道的联合估计.理论分析与仿真结果表明,在未知信道状态信息的条件下,所提方法能有效地检测信号,并同时估计出信道状态信息;与传统的导频辅助信道估计方法相比,所提方法具有更好的信道估计精度.
Aiming at multiple input multiple output (MIMO) system, a joint signal detection and channel estimation method based on Tucker-2 model is proposed in this paper. The proposed method encodes each transmitted information symbol three-dimensionally at the source end, The space-time and time-diversity are obtained, and the signal sent by the source is blind detected.At the end of the receiver, the proposed method constructs the Tucker-2 model for the received signal and designs two reception algorithms to fit the model, so that the information symbol And channel estimation.The theoretical analysis and simulation results show that under the condition of unknown channel state information, the proposed method can effectively detect the signal and estimate the channel state information at the same time. Compared with the traditional pilot-assisted channel estimation , The proposed method has better channel estimation accuracy.