Title :
Optimal energy-efficient relay selection in cooperative cellular networks
Author :
Yun Li ; Chao Liao ; Xue Zhu ; Daneshmand, Mojgan ; Chonggang Wang
Author_Institution :
Chongqing Key Lab. of Mobile Commun. Technol., Chongqing Univ. of Posts & Telecommun., Chongqing, China
Abstract :
In this paper, we consider relay selection technique in a cooperative cellular network where user terminals act as relays to help the communications between a base station (BS) and cell-edge users (CEUs). We firstly build cooperative sets for source mobile users according to their transmission radius. Then, transmission power sets are built for all mobile users according to SNR thresholds. Finally, Energy Efficient Cooperative-Sets-based Maximum Weighted Matching (EECS-MWM) algorithm is proposed to select the optimal relay for source users to maximize the system energy efficiency. The performance of proposed scheme is evaluated and compared with existing methods in terms of system energy efficiency, capacity, and the number of successful matched user pairs, which show that EECS-MWM can improve the performance of the cooperative cellular networks.
Keywords :
cellular radio; cooperative communication; relay networks (telecommunication); telecommunication power management; BS; CEU; EECS-MWM algorithm; SNR thresholds; base station; cell-edge users; cooperative cellular network; energy efficient cooperative-sets-based maximum weighted matching algorithm; mobile users; optimal energy-efficient relay selection; Ad hoc networks; Bipartite graph; Mobile communication; Relays; Resource management; Signal to noise ratio; Wireless communication; cooperative communication; cooperative sets; energy efficiency; wireless cellular networks;
Conference_Titel :
Networks (ICON), 2013 19th IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4799-2083-9
DOI :
10.1109/ICON.2013.6781966
