| 多中继放大转发协同通信系统功率分配方法 |
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| 引用本文： | 武卓,杨洪兵,郑国莘.多中继放大转发协同通信系统功率分配方法[J].上海大学学报(自然科学版),2012(1):20-25. |
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| 作者姓名： | 武卓 杨洪兵 郑国莘 |
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| 作者单位： | 上海大学特种光纤与光接入网省部共建重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(60972055);上海市教委基金资助项目(09CG40);上海市重点学科建设资助项目(S30108);上海市科委重点实验室资助项目(08DZ2231100) |
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| 摘 要： | 功率分配一直是无线通信系统中的一项最主要的关键技术,研究如何提高能量利用率对无线通信系统有重大意义.针对多中继放大转发协同通信系统,提出一种新型的功率分配方法,以最小化发送功率为目标,将模拟退火(simulated annealing,SA)算法应用于求功率分配因子.仿真结果表明,该方法在误码率性能和系统容量方面都明显优于等功率分配方法.在给定误码率情况下,该方法能够节省发送功率。
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| 关 键 词： | 协同通信 放大转发 功率分配 模拟退火算法 |
Power Allocation Method for Amplify-and-Forward Cooperative Communication Systems with Multiple Relays |
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| WU Zhuo,YANG Hong-bing,ZHENG Guo-xin.Power Allocation Method for Amplify-and-Forward Cooperative Communication Systems with Multiple Relays[J].Journal of Shanghai University(Natural Science),2012(1):20-25. |
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| Authors: | WU Zhuo YANG Hong-bing ZHENG Guo-xin |
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| Institution: | (Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200072,China) |
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| Abstract: | Power allocation has long been one of the most crucial technologies in wireless communications.Research on effective utilization of power has great significance for wireless systems.This paper proposes a novel power allocation scheme for the amplify-and-forward(AF) cooperative communication systems to minimize the total transmit power.The simulated annealing(SA) algorithm is introduced here to solve the optimization problem.Simulation results indicate that the proposed scheme outperforms that of equal power allocation scheme in terms of bit error rate and system capacity. |
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| Keywords: | cooperative communications amplify-and-forward(AF) power allocation simulated annealing(SA) algorithm |
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