Paper Info
Title
Joint User Scheduling, Relay Selection, and Power Allocation for Multi-Antenna Opportunistic Beamforming Systems
Abstract
Opportunistic beamforming (OBF) is a potential technique in the fifth generation (5G) and beyond 5G (B5G) that can boost the performance of communication systems and encourage high user quality of service (QoS) through multi-user selection gain. However, the achievable rate tends to be saturated with the increased number of users, when the number of users is large. To further improve the achievable rate, we proposed a multi-antenna opportunistic beamforming-based relay (MOBR) system, which can achieve both multi-user and multi-relay selection gains. Then, an optimization problem is formulated to maximize the achievable rate. Nevertheless, the optimization problem is a non-deterministic polynomial (NP)-hard problem, and it is difficult to obtain an optimal solution. In order to solve the proposed optimization problem, we divide it into two suboptimal issues and apply a joint iterative algorithm to consider both the suboptimal issues. Our simulation results indicate that the proposed system achieved a higher achievable rate than the conventional OBF systems and outperformed other beamforming schemes with low feedback information.</p>
Year
DOI
Venue
2021
10.3390/e23101278
ENTROPY
Keywords
DocType
Volume
multi-antenna, opportunistic beamforming, relay, resource scheduling
Journal
23
Issue
ISSN
Citations 
10
1099-4300
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Wen-Bin Sun193.55
Mingliang Tao26810.49
Xin Yang322.45
Tao Zhang400.34
Chuang Han503.04
Ling Wang6146.76