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

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 o...

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Bibliographic Details
Published inIEEE International Conference on Communications (2003) pp. 3904 - 3910
Main Authors Abanto-Leon, Luis F., Hollick, Matthias, Clerckx, Bruno, Sim, Gek Hong Allyson
Format Conference Proceeding
LanguageEnglish
Published IEEE 16.05.2022
Subjects
Complexity theory
multicast
non-orthogonal multiple access
Optimization
parametric optimization
Precoding
Quality of service
Quantization (signal)
Radio frequency
rate-splitting
SDP
Unicast
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Summary: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.
ISSN:1938-1883
DOI:10.1109/ICC45855.2022.9838374