Sequential Parametric Optimization for Rate-Splitting Precoding in Non-Orthogonal Unicast and Multicast Transmissions

Autor:	Abanto-Leon, Luis F., Hollick, Matthias, Clerckx, Bruno, Sim, Gek Hong
Rok vydání:	2022
Předmět:	Computer Science - Information Theory Computer Science - Networking and Internet Architecture Electrical Engineering and Systems Science - Signal Processing
Druh dokumentu:	Working Paper
Popis:	This paper investigates rate-splitting (RS) precoding for non-orthogonal unicast and multicast (NOUM) transmissions using fully-digital and hybrid precoders. We study the nonconvex weighted sum-rate (WSR) maximization problem subject to a multicast requirement. We propose FALCON, an approach based on sequential parametric optimization, to solve the aforementioned problem. We show that FALCON converges to a local optimum without requiring judicious selection of an initial feasible point. Besides, we show through simulations that by leveraging RS, hybrid precoders can attain nearly the same performance as their fully-digital counterparts under certain specific settings. Comment: 7 pages / ICC 2022
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2201.10426 Zobrazit plný text záznamu View this record from Arxiv