DeepAI AI Chat
Log In Sign Up

Cooperative Rate-Splitting for MISO Broadcast Channel with User Relaying

06/18/2019
by   Jian Zhang, et al.
The University of Hong Kong
Imperial College London
Xidian University
0

Due to its promising performance in a wide range of practical scenarios, Rate-Splitting Multiple Access (RSMA) has recently received significant attention in academia for the downlink of communication systems. In this letter, we propose and analyse a Cooperative Rate-Splitting (CRS) strategy based on the three-node relay channel where the transmitter is equipped with multiple antennas. By splitting user messages and linearly precoding common and private streams at the transmitter, and opportunistically asking the relaying user to forward its decoded common message, CRS can efficiently cope with a wide range of propagation conditions (disparity of user channel strengths and directions) and compensate for performance degradation due to deep fading. The precoder design and resource allocation scheme are optimized by solving the Weighted Sum Rate (WSR) maximization problem. Numerical results demonstrate that our proposed CRS scheme can achieve an explicit rate region improvement compared to its non-cooperative counterpart and other cooperative strategies (such as cooperative NOMA).

READ FULL TEXT

page 1

page 2

page 3

page 9

page 10

page 11

06/03/2020

Cooperative Rate-Splitting for Secrecy Sum-Rate Enhancement in Multi-antenna Broadcast Channels

In this paper, we employ Cooperative Rate-Splitting (CRS) technique to e...
04/27/2018

Rate-Splitting Multiple Access for Cooperative Multi-Cell Networks

As a promising downlink multiple access scheme, Rate-Splitting Multiple ...
08/09/2022

Coverage Increase at THz Frequencies: A Cooperative Rate-Splitting Approach

Numerous studies claim that terahertz (THz) communication will be an ess...
10/17/2019

Max-min Fairness of K-user Cooperative Rate-Splitting in MISO Broadcast Channel with User Relaying

Cooperative Rate-Splitting (CRS) strategy, relying on linearly precoded ...
06/06/2018

Analysis and Optimization for Weighted Sum Rate in Energy Harvesting Cooperative NOMA Systems

We consider a cooperative non-orthogonal multiple access system with rad...
08/08/2022

Reconfigurable Intelligent Surfaces Empowered Cooperative Rate Splitting with User Relaying

Cooperative rate splitting (CRS), built upon rate splitting multiple acc...
10/08/2022

Secrecy Rate of the Cooperative RSMA-Aided UAV Downlink Relying on Optimal Relay Selection

The Cooperative Rate-Splitting (CRS) scheme, proposed evolves from conve...