Sequential Parametric Optimization for Rate-Splitting Precoding in Non-Orthogonal Unicast and Multicast Transmissions
Information Theory
2022-01-26 v1 Networking and Internet Architecture
Signal Processing
math.IT
Abstract
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.
Cite
@article{arxiv.2201.10426,
title = {Sequential Parametric Optimization for Rate-Splitting Precoding in Non-Orthogonal Unicast and Multicast Transmissions},
author = {Luis F. Abanto-Leon and Matthias Hollick and Bruno Clerckx and Gek Hong Sim},
journal= {arXiv preprint arXiv:2201.10426},
year = {2022}
}
Comments
7 pages / ICC 2022