5G for Future Wireless Networks. First International Conference, 5GWN 2017, Beijing, China, April 21-23, 2017, Proceedings

Research Article

Throughput Maximization for Two-Hop Decode-and-Forward Relay Channels with Non-ideal Circuit Power

  • @INPROCEEDINGS{10.1007/978-3-319-72823-0_22,
        author={Hengjing Liang and Xiaojie Wen and Chuan Huang and Zhi Chen and Shaoqian Li},
        title={Throughput Maximization for Two-Hop Decode-and-Forward Relay Channels with Non-ideal Circuit Power},
        proceedings={5G for Future Wireless Networks. First International Conference, 5GWN 2017, Beijing, China, April 21-23, 2017, Proceedings},
        proceedings_a={5GWN},
        year={2018},
        month={1},
        keywords={Green communication Relay channel Throughput maximization Optimal power allocation Decode-and-forward (Df)},
        doi={10.1007/978-3-319-72823-0_22}
    }
    
  • Hengjing Liang
    Xiaojie Wen
    Chuan Huang
    Zhi Chen
    Shaoqian Li
    Year: 2018
    Throughput Maximization for Two-Hop Decode-and-Forward Relay Channels with Non-ideal Circuit Power
    5GWN
    Springer
    DOI: 10.1007/978-3-319-72823-0_22
Hengjing Liang,*, Xiaojie Wen1,*, Chuan Huang,*, Zhi Chen,*, Shaoqian Li,*
  • 1: Beijing Institute of Satelite Information Engineering
*Contact email: lianghj@hotmail.com, ziwen7189@aliyun.com, huangch@uestc.edu.cn, chenzhi@uestc.edu.cn, lsq@uestc.edu.cn

Abstract

This paper studies the throughput maximization problem for a two-hop relay channel considering non-ideal circuit power. In particular, the relay operates in a half-duplex manner, and the decode-and-forward (DF) relaying scheme is adopted. Considering the extra power consumption by the circuits, the optimal power allocation to maximize the throughput of the considered system over the infinite time horizon is investigated. By transforming the non-convex problem into the quasiconcave one, the closed-form solution shows that the source and the relay transmit with certain probability, which is determined by the average power budget, circuit power consumption, and channel gains. Numerical results show that the optimal power allocation scheme outperforms other conventional schemes.