标题： 基于最小化-最大化方法的FDD MISO系统鲁棒预编码 显示英文标题

标题： Robust Precoding for FDD MISO Systems via Minorization Maximization

摘要： 在这项工作中，我们提出了一种基于小量最大化技术的鲁棒预编码器设计方法，该技术优化了可实现频谱效率的替代函数。 所提出的方法在优化过程中考虑了信道估计误差，因此在信道状态信息（CSI）不完美的情况下具有鲁棒性。 此外，设计方法经过调整，消除了满足功率约束所需的线搜索需求，从而显著加速了预编码器的计算。 仿真结果显示，所提出的鲁棒预编码方法与加权最小均方误差（WMMSE）预编码方法具有竞争力，特别是在不完美CSI场景下。 显示英文摘要

摘要： In this work, we propose an approach to robust precoder design based on a minorization maximization technique that optimizes a surrogate function of the achievable spectral efficiency. The presented method accounts for channel estimation errors during the optimization process and is, hence, robust in the case of imperfect channel state information (CSI). Additionally, the design method is adapted such that the need for a line search to satisfy the power constraint is eliminated, that significantly accelerates the precoder computation. Simulation results demonstrate that the proposed robust precoding method is competitive with weighted minimum mean square error (WMMSE) precoding, in particular, under imperfect CSI scenarios.