论文标题
多源预编码用于继电器AD的MMWave Communications中的总和最大化
Multiuser Precoding for Sum-Rate Maximization in Relay-Aided mmWave Communications
论文作者
论文摘要
接力赛的传输被认为是打击严重的路径损失并将连接障碍作为毫米波（MMWave）通信的独特挑战而出现的关键策略。这项工作考虑了继电器的多源MMWave通信方案，旨在通过最佳传输和继电器预编码器设计最大化总和率。我们提出了一种新型的关节预编码设计策略，该策略利用其与总和最大化的等效性利用加权的最小均方误差（WMMSE）。我们获得了传输和继电器预编码器的封闭形式表达式，并建议通过交替的优化迭代来计算它们，而不必诉诸复杂的数值优化技术。与常规的预编码方案相比，数值结果验证了所提出的预编码策略的优越性。
Relay-aided transmission is envisioned as a key strategy to combat severe path loss and link blockages emerging as unique challenges in millimeter-wave (mmWave) communications. This work considers a relay-aided multiuser mmWave communications scenario aiming at maximizing the sum rate through optimal transmit and relay precoder design. We propose a novel joint precoder design strategy, which exploits weighted minimum mean-square error (WMMSE) using its equivalency to sum-rate maximization. We obtain closed form expressions of transmit and relay precoders, and propose to compute them through alternating-optimization iterations without having to resort to complicated numerical optimization techniques. Numerical results verify the superiority of the proposed precoding strategy as compared to conventional precoding schemes.
