Rate-Splitting Multiple Access for Coordinated Multi-Point Joint Transmission
Yijie Mao,Bruno Clerckx,Victor O.K. Li +2 more
- 20 May 2019
- pp 1-6
51
TL;DR: In this paper, the authors further study RSMA in downlink Coordinated Multi-Point (CoMP) Joint Transmission (JT) networks by investigating the optimal beamformer design to maximize the weighted sum-rate (WSR) of all users subject to individual quality of service (QoS) rate constraints and per base station power constraints.
read more
Abstract: As a promising downlink multiple access scheme, Rate-Splitting Multiple Access (RSMA) has been shown to achieve superior spectral and energy efficiencies compared with SpaceDivision Multiple Access (SDMA) and Non-Orthogonal Multiple Access (NOMA) in downlink single-cell systems. By relying on linearly precoded rate-splitting at the transmitter and successive interference cancellation at the receivers, RSMA has the capability of partially decoding the interference and partially treating the interference as noise, and therefore copes with a wide range of user deployments and network loads. In this work, we further study RSMA in downlink Coordinated Multi-Point (CoMP) Joint Transmission (JT) networks by investigating the optimal beamformer design to maximize the Weighted Sum-Rate (WSR) of all users subject to individual Quality of Service (QoS) rate constraints and per base station power constraints. Numerical results show that, in CoMP JT, RSMA achieves significant WSR improvement over SDMA and NOMA in a wide range of inter-user and inter-cell channel strength disparities. Specifically, SDMA (resp. NOMA) is more suited to deployments with little (resp. large) inter-user channel strength disparity and large (resp. little) inter-cell channel disparity, while RSMA is suited to any deployment. We conclude that RSMA provides rate, robustness and QoS enhancements over SDMA and NOMA in CoMP JT networks.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends
TL;DR: Rate-splitting multiple access (RSMA) has emerged as a novel, general, and powerful framework for the design and optimization of non-orthogonal transmission, multiple access, and interference management strategies for future wireless networks as mentioned in this paper .
332
Rate-Splitting for Multi-Antenna Non-Orthogonal Unicast and Multicast Transmission: Spectral and Energy Efficiency Analysis
TL;DR: Numerical results show that the proposed RS-assisted NOUM transmission strategies are more spectrally and energy efficient than the conventional Multi-User Linear-Precoding (MU–LP), Orthogonal Multiple Access (OMA) and power-domain NOMA in a wide range of user deployments.
326
Is NOMA Efficient in Multi-Antenna Networks? A Critical Look at Next Generation Multiple Access Techniques
Bruno Clerckx,Yijie Mao,Robert Schober,Eduard A. Jorswieck,David J. Love,Jinhong Yuan,Lajos Hanzo,Geoffrey Ye Li,Erik G. Larsson,Giuseppe Caire +9 more
- 10 Jun 2021
TL;DR: In this paper, the benefits of NOMA over Orthogonal Multiple Access (OMA) have been highlighted, and the authors highlight the design constraint that multi-antenna NOMAs require one user to fully decode the messages of the other users.
Beyond Dirty Paper Coding for Multi-Antenna Broadcast Channel With Partial CSIT: A Rate-Splitting Approach
Yijie Mao,Bruno Clerckx +1 more
TL;DR: This work shows that linearly precoded Rate-Splitting (RS), relying on the split of messages into common and private parts and linear precoding at the transmitter, and successive interference cancellation at the receivers, can achieve larger rate region than DPC in multi-antenna BC with partial CSIT.
149
A Primer on Rate-Splitting Multiple Access: Tutorial, Myths, and Frequently Asked Questions
TL;DR: In this article , rate splitting multiple access (RSMA) has emerged as a powerful multiple access, interference management, and multi-user strategy for next generation communication systems, and the fundamental problem of interference management is discussed.
References
Multi-Cell MIMO Cooperative Networks: A New Look at Interference
TL;DR: An overview of the theory and currently known techniques for multi-cell MIMO (multiple input multiple output) cooperation in wireless networks is presented and a few promising and quite fundamental research avenues are also suggested.
The Capacity Region of the Gaussian Multiple-Input Multiple-Output Broadcast Channel
TL;DR: A new notion of an enhanced broadcast channel is introduced and is used jointly with the entropy power inequality, to show that a superposition of Gaussian codes is optimal for the degraded vector broadcast channel and that DPC is ideal for the nondegraded case.
2K
A new achievable rate region for the interference channel
Te Sun Han,K. Kobayashi +1 more
TL;DR: A new achievable rate region for the general interference channel which extends previous results is presented and evaluated and the capacity of a class of Gaussian interference channels is established.
1.9K
Gaussian Interference Channel Capacity to Within One Bit
TL;DR: The capacity of the two-user Gaussian interference channel has been open for 30 years and the best known achievable region is due to Han and Kobayashi as mentioned in this paper, but its characterization is very complicated.
1.6K
Transmitter Optimization for the Multi-Antenna Downlink With Per-Antenna Power Constraints
TL;DR: It is shown that various notions of uplink-downlink duality may be unified under a Lagrangian duality framework and this new interpretation of duality gives rise to efficient numerical optimization techniques for solving the downlink per-antenna transmitter optimization problem.