Joint Relay Selection and Power Allocation for Cooperative Cellular Networks

Authors:
Kai Ma;Zhixin Liu;Xinping Guan
Affiliations:
Institute of Electrical Engineering, Key Laboratory of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao, China 066004;Institute of Electrical Engineering, Key Laboratory of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao, China 066004;School of Electronics, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai, China 200240
Venue:
Wireless Personal Communications: An International Journal
Year:
2012

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Abstract

The principal purpose of this paper is to develop a joint relay selection and power allocation algorithm in cooperative cellular networks with multiple users assisted by multiple relays. By solving a rate optimization problem, we can obtain the optimal solutions and the distributed implementation based on the primal-dual decomposition. An admission control algorithm is also presented when there exists the minimal rate requirement for each user. Simulation results indicate that the algorithm with joint design is superior to the existing ones with isolated design in large total transmission rates and small deviations. Moreover, with the admission control algorithm, the rate requirements for users participating in cooperation are also satisfied.