Energy efficient subcarrier-power allocation and relay selection scheme for OFDMA-based cooperative relay networks

Chieh Yuan Ho*, Ching-Yao Huang

*此作品的通信作者

    研究成果: Conference contribution同行評審

    20 引文 斯高帕斯(Scopus)

    摘要

    The uplink energy efficient communication is an important issue due to the limited battery power for Mobile Stations (MSs). In this paper, the average 'Bits-per-Joule' is defined as the energy efficiency metric, and the optimal joint power allocation for both MS and RS is derived for maximizing MS' energy efficiency. Based on that, we developed a low-complexity subcarrier-power allocation and relay selection scheme for maximizing energy efficiency per user in an OFDMA cooperative relay network, assuming full channel state information (CSI) is available at both relay nodes and BS nodes. The numerical result demonstrates that the energy efficiency performance of cooperative relay networks can be better in the range of 15% to 30% as compared to that of single BS networks. It also shows our proposed scheme has significant improvement on the energy efficiency performance as compared with conventional max-throughput and fairness-based EPA schemes. Furthermore, the proposed scheme can achieve similar performance in much lower computational complexity as compared with the exhaustive search scheme.

    原文English
    主出版物標題2011 IEEE International Conference on Communications, ICC 2011
    DOIs
    出版狀態Published - 2 9月 2011
    事件2011 IEEE International Conference on Communications, ICC 2011 - Kyoto, Japan
    持續時間: 5 6月 20119 6月 2011

    出版系列

    名字IEEE International Conference on Communications
    ISSN(列印)0536-1486

    Conference

    Conference2011 IEEE International Conference on Communications, ICC 2011
    國家/地區Japan
    城市Kyoto
    期間5/06/119/06/11

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