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下行多用户中继系统中的联合收发机设计

DOI: 10.13190/j.jbupt.2013.06.012, PP. 55-59

Keywords: 下行多用户,中继系统,联合收发机设计

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Abstract:

提出了一种下行多用户中继系统收发机联合优化算法,研究了基站端和中继端都采用预编码技术下基于最小均方误差准则的收发机联合优化问题.在第1跳信噪比较高的情况下,系统误差协方差矩阵可以简化分解为2个独立的部分,从而将两跳收发机联合优化问题的求解转化单跳多输入多输出(MIMO)优化问题进行求解,同时可以获得基站端预编码的闭式解,不仅简化了求解过程也降低了算法的计算复杂度和系统的信道信息反馈开销.仿真结果验证了算法的性能.

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