We consider globally optimal precoder design for rate splitting multiple access in Gaussian multiple-input single-output downlink channels with respect to weighted sum rate and energy efficiency maximization. The proposed algorithm solves an instance of the joint multicast and unicast beamforming problem and includes multicast- and unicast-only beamforming as special cases. Numerical results show that it outperforms state-of-the-art algorithms in terms of numerical stability and converges almost twice as fast.
翻译:我们认为高山多个投入单产出下行链路的分速率分配多重接入的全球最佳预编码设计与加权总和率和能源效率最大化有关。 拟议的算法解决了一个多播和单播波束成型联合问题的例子,并将多播和单播光束成型作为特例。 数字结果显示,在数字稳定性方面,该算法优于最新算法,并汇合近两倍。