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对于无线通信系统中的长时长混合通信信号,接收机是将其分成多个时间段依次进行接收分离的。但是分离中固有的不确定性会使得相邻时间段分离出的各路信号在序号、相位和幅度上不完全相同,这将导致相邻时间段分离出的各路信号不能正确相连接,合成各路完整的接收信号。文章针对这种信号在进行分段处理时因分离不确定性引起的问题,提出了一种分离重建方法,并通过MATLAB仿真试验验证了该方法的有效性。理论分析和仿真试验表明:与文献[9]中基于估计混合矩阵列向量相关性方法相比,该方法在一定条件下具有更好的性能。
For long-term mixed communication signal in wireless communication system, the receiver divides it into multiple time segments to receive and separate in turn. However, the inherent uncertainty in the separation will make the signals separated in adjacent time periods not completely identical in sequence number, phase and amplitude, which will result in that signals separated by adjacent time periods can not be correctly connected and synthesized Each complete reception signal. Aiming at the problem of signal separation caused by the separation uncertainty, this paper presents a separation and reconstruction method and validates the effectiveness of the method through MATLAB simulation. The theoretical analysis and simulation results show that this method has better performance under certain conditions than the method based on the estimation of the mixed matrix column vector correlation in [9].