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Introducing dual regularization parameters into regularized channel inversion (RCI)-based vector perturbation for modulo loss reduction

机译:将双正则化参数引入基于正则化信道反转(RCI)的矢量扰动中以减少模损耗

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This paper proposes a method to reduce the symbol error caused by modulo operator for regularized channel inversion (RCI)-based vector perturbation (RCI-VP). The proposed method introduces dual regularization parameters of RCI precoding matrix. First regularization parameter a is set so as to maximize the signal to interference plus noise ratio (SINR) value of each stream to find the optimal perturbation vector. The second regularization parameter 0.2 is set so as to minimize the total MSE between the transmitted perturbation vector and received perturbation vector to reduce the symbol error caused by modulo operator. The simulated results confirm that the proposed method can improve the performance of RCI-VP over i.i.d. MIMO channel and frequency-selective fading MIMO channel.
机译:针对基于正则化信道反演(RCI)的向量扰动(RCI-VP),本文提出了一种减少模运算符引起的符号误差的方法。该方法引入了RCI预编码矩阵的双重正则化参数。设置第一正则化参数a,以使每个流的信号干扰加噪声比(SINR)值最大化,以找到最佳扰动矢量。设置第二正则化参数0.2以最小化发送的扰动矢量和接收的扰动矢量之间的总MSE,以减少由模运算符引起的符号误差。仿真结果证实了所提方法可以在i.d.上提高RCI-VP的性能。 MIMO信道和频率选择性衰落MIMO信道。

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