Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers

Research Article

A Joint Optimal Algorithm Based on Relay Nodes Selection and Power Allocation

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  • @INPROCEEDINGS{10.1007/978-3-642-30493-4_31,
        author={Zhao Shen and Daiyu Fu and Yu Jin},
        title={A Joint Optimal Algorithm Based on Relay Nodes Selection and Power Allocation},
        proceedings={Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers},
        proceedings_a={WICON},
        year={2012},
        month={10},
        keywords={Relay convex optimization nodes selection power allocation},
        doi={10.1007/978-3-642-30493-4_31}
    }
    
  • Zhao Shen
    Daiyu Fu
    Yu Jin
    Year: 2012
    A Joint Optimal Algorithm Based on Relay Nodes Selection and Power Allocation
    WICON
    Springer
    DOI: 10.1007/978-3-642-30493-4_31
Zhao Shen,*, Daiyu Fu1,*, Yu Jin1
  • 1: Huazhong Univ. of Sci. & Technol.
*Contact email: clingerlisa@gmail.com, fudaiyu@gmial.com

Abstract

In this paper, we proposed a joint optimal algorithm based on relay nodes selection and power allocation, which utilizes the theory utility maximization modeling system by adopting convex optimization, and obtains the optimal power allocation between source node and relay nodes by applying the Karush-Kuhn-Tucker (KKT) condition. In addition, the relay nodes allocated with power unequal to zero are the selected relay nodes, therefore, the selection of relay nodes is realized. Moreover, the optimal number of relay nodes is discussed. Simulation results show that the proposed algorithm achieves a better performance than the traditional equal power allocation algorithm.