Paper Info
Title
Power Allocation and Sum-Rate Analysis for Multi-User Multi-Relay Networks
Abstract
For a multi-user multi-relay network with a total relay power constraint, we investigate the relay power allocation (PA) that maximizes the network sum-rate. Different users use orthogonal channels to avoid interference. With the optimal relay beamforming for each user, the problem reduces to finding the optimal power the relays use in total to help each user. We first prove that the problem is convex. Then a suboptimal solution is proposed in closed form. Further, the SNR and sum-rate are analyzed for networks with a large number of relay antennas. The asymptotic behaviour of the SNR is derived rigorously for the high transmit power regime. Simulation results are provided to show the significance of proper PA and to justify the analytical SNR and sum-rate results.
Year
DOI
Venue
2013
10.1109/VTCFall.2013.6692366
VTC Fall
Keywords
Field
DocType
relay networks (telecommunication),relay antennas,network sum rate,relay power constraint,power allocation analysis,telecommunication power management,array signal processing,orthogonal channels,pa,sum rate analysis,relay power allocation,optimal relay beamforming,multi-user multi-relay networks
Beamforming,Relay channel,Transmitter power output,Computer science,Communication channel,Electronic engineering,Interference (wave propagation),Relay,Link Access Procedure for Frame Relay,Multi-user
Conference
ISSN
Citations 
PageRank 
1090-3038
2
0.36
References 
Authors
19
2
Name
Order
Citations
PageRank
Qian Wang118412.32
Yindi Jing22116114.16