应用科学学报 ›› 2016, Vol. 34 ›› Issue (1): 22-29.doi: 10.3969/j.issn.0255-8297.2016.01.003

• 通信工程 • 上一篇    下一篇

调制速率对放大转发MQAM中继链路能效性能的影响

陈芳芳1,2, 王涛1,2   

  1. 1. 上海大学特种光纤与光接入网重点实验室, 上海 200072;
    2. 上海大学通信与信息工程学院, 上海 200444
  • 收稿日期:2014-11-08 修回日期:2015-04-28 出版日期:2016-01-30 发布日期:2016-01-30
  • 通信作者: 王涛,教授,博导,研究方向:绿色高能效无线通信网络(OFDMA、UWB)优化设计等,E-mail:twang@shu.edu.cn E-mail:twang@shu.edu.cn
  • 基金资助:

    国家自然科学基金(No.61401266);高等学校博士点专项科研基金(No.201331081-20015);上海市教育委员会科研创新项目基金(No.14ZZ096);上海市科委国际合作项目基金(No.13510721100);上海大学创新项目基金;上海高校特聘教授(东方学者)岗位计划基金资助

Impact of Modulation Rate on Energy Efficiency of Amplify-and-Forward Relay Transmission Links

CHEN Fang-fang1,2, WANG Tao1,2   

  1. 1. Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China;
    2. School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
  • Received:2014-11-08 Revised:2015-04-28 Online:2016-01-30 Published:2016-01-30

摘要: 针对采用放大转发和MQAM调制的源-中继-终端的通信链路,研究了在保证终端解调误码率低于给定值条件下调制速率对能量效率的影响.推导了射频电路消耗的最小功率,在考虑电路消耗功率的情况下得到了能效性能的函数表达式.理论分析表明,能效性能是调制速率的拟凹函数,当调制速率增大时,能效先递增再递减.通过仿真计算验证了理论分析的正确性.

关键词: 能量效率, 调制速率, 放大转发中继

Abstract: The influence of modulation rate on energy efficiency (EE) for a source-relayterminal communication link using the amplify-and-forward (AF) protocol and MQAM is studied given a prescribed error rate (BER). Transmission power consumption is calculated. The total power consumption is obtained when the circuit power consumption is taken into account. An expression of EE is derived, and the influence of modulation rate on EE studied. Simulation results show that, with the modulation rate increasing, energy efficiency increases first, and then decreases.

Key words: energy efficiency, modulation rate, amplify-and-forward relay

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