| 调制速率对放大转发MQAM中继链路能效性能的影响 |
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| 引用本文： | 陈芳芳,王涛.调制速率对放大转发MQAM中继链路能效性能的影响[J].应用科学学报,2016,34(1):22-29. |
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| 作者姓名： | 陈芳芳 王涛 |
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| 作者单位： | 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 |
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| 基金项目： | 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 |
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| 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.
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| 关 键 词： | 能量效率 调制速率 放大转发中继 |
| 收稿时间： | 2014-11-08 |
| 修稿时间： | 2015-04-28 |
Impact of Modulation Rate on Energy Efficiency of Amplify-and-Forward Relay Transmission Links |
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| CHEN Fang-fang,WANG Tao.Impact of Modulation Rate on Energy Efficiency of Amplify-and-Forward Relay Transmission Links[J].Journal of Applied Sciences,2016,34(1):22-29. |
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| Authors: | CHEN Fang-fang WANG Tao |
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| Institution: | 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 |
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| 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. |
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| Keywords: | energy efficiency modulation rate amplify-and-forward relay |
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