Autonomous relaying scheme with minimum user power consumption in cooperative multicast communications

Zhao, G. , Shi, W., Chen, Z. and Zhang, Q. (2016) Autonomous relaying scheme with minimum user power consumption in cooperative multicast communications. IEEE Transactions on Wireless Communications, 15(4), pp. 2509-2522. (doi: 10.1109/TWC.2015.2504523)

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Abstract

In this paper, we propose a probability-based relay selection and power control method in two-phase cooperative multicast communications to minimize the user power consumption for any given multicast data rate. Our method gives each user the ability to autonomously decide whether to participate in the relay transmission based on an active probability. In particular, we develop an optimal algorithm to calculate the optimal active probability and relay power by balancing the outage reduction efficiency. We also develop a sub-optimal algorithm by balancing the outage probability of the cell-center and the cell-edge users. Simulation results demonstrate that the proposed optimal and sub-optimal algorithms can reduce the user power consumption up to about 54% and 40%, respectively, compared with the conventional algorithm that requires all users to participate in the relay transmission.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Zhao, Dr Guodong
Authors: Zhao, G., Shi, W., Chen, Z., and Zhang, Q.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Wireless Communications
Publisher:IEEE
ISSN:1536-1276
ISSN (Online):1558-2248
Published Online:01 December 2015

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