One-bit precoding is a recently proposed scheme that enables significant savings in hardware cost and power consumption for massive multiuser multiple-input–multiple-output systems. In this letter, a new minimum mean-square-error (MMSE) precoder is presented for both single- and multiple-antenna mobile stations with enhanced receive processing (ERP) capability. By exploiting the structure embedded in the formulated nonconvex optimization problem, a new algorithm is developed on the basis of a combination of the alternating minimization method and mathematical programming with equilibrium constraints. An approximate maximum likelihood detector is also proposed to collaborate with the MMSE-ERP precoder. Simulation results verify that our MMSE-ERP precoder can exploit the additional degrees of freedom in the general system model considered, resulting in significant performance gain compared with existing one-bit precoders.

中文翻译：

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用于具有增强接收处理的 MU-MIMO 系统的 MMSE 一位预编码

一位预编码是最近提出的一种方案，它可以显着节省大量多用户多输入多输出系统的硬件成本和功耗。在这封信中，为具有增强接收处理 (ERP) 能力的单天线和多天线移动台提供了一种新的最小均方误差 (MMSE) 预编码器。通过利用嵌入在公式化的非凸优化问题中的结构，在交替最小化方法和具有平衡约束的数学规划相结合的基础上，开发了一种新算法。还提出了近似最大似然检测器与 MMSE-ERP 预编码器协作。仿真结果验证了我们的 MMSE-ERP 预编码器可以利用所考虑的通用系统模型中的额外自由度，