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| A Study of Fairness of the Selection of the Cooperative Partner |
| Liu Wei-xin①②; Zhang Zhong-pei①; Li Shao-qian①;Zhang Yan② |
| ①National Key Lab of Communication, University of Electronic Science and Technology of China, Chengdu 610054, China;②Communication System Department, Spreadtrum Communications (Shanghai) Co., Ltd., Shanghai 201203, China |
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Abstract The selection of cooperative partner is a key problem in the cooperative network. All the former solutions to this problem in essence base on the performance of the transceiver while neglecting the fairness among the cooperative partners. In this paper, a new scheme is described as following to achieve the balance between the performance and the fairness among the nodes. Firstly, using the counter of each node in the network to establish the mechanism based on the idea “help others equal to help yourself” to avoid the self-interest users. Secondly, a threshold about instant SNR at the destination receiver is used to decide whether needing relay. Thirdly, the algorithm established keeps a balance between maximizing the throughput and minimizing the variance of the lifetime of all the candidate partners in the network. The simulation results under all kinds of conditions indicate that the scheme can get dynamic balance between performance and fairness and lead to more fairness in the cooperative network, the performance of fairness of the scheme outperforms the other of the references’ the best knowledge .
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Received: 10 October 2006
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2008, Vol. 30 
