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基于CDMA下行链路的功率最优化调度
引用本文:彭烈新,朱光喜,边海龙,张连成,魏志刚.基于CDMA下行链路的功率最优化调度[J].计算机工程,2011,37(5):19-21,24.
作者姓名:彭烈新  朱光喜  边海龙  张连成  魏志刚
作者单位:1. 中国石油勘探开发研究院,北京,100083;中国石油钻井工程技术研究院,北京,100083
2. 华中科技大学电子信息工程系,武汉,430074
3. 中国石油钻井工程技术研究院,北京,100083
基金项目:国家"863"计划基金
摘    要:为CDMA下行链路多用户系统建立在用户时延限制下使基站平均功率最小的数学模型,将该优化问题转化为非约束Markov决策过程,用动态规划的方法获得最优解,并证明2个用户的功率-时延曲面是一个凸曲面。仿真结果证明,在CDMA下行链路多用户系统中,增加时延能节省功率且平均时延与功率仍具有凸函数关系。

关 键 词:CDMA下行链路  最优化调度  Markov决策过程  时延  功率

Power Optimization Schedule Based on CDMA Downlink
PENG Lie-xin,ZHU Guang-xi,BIAN Hai-long,ZHANG Lian-cheng,WEI Zhi-gang.Power Optimization Schedule Based on CDMA Downlink[J].Computer Engineering,2011,37(5):19-21,24.
Authors:PENG Lie-xin  ZHU Guang-xi  BIAN Hai-long  ZHANG Lian-cheng  WEI Zhi-gang
Affiliation:1.Research Institute of Petroleum Exploration & Development,Beijing 100083,China; 2.China Petroleum Drilling Research Institute,Beijing 100083,China; 3.Department of Electronic and Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
Abstract:The mathematical model of minimizing the average power of base station under delay constraint is proposed for multi-user system in CDMA downlink.The problem is formulated as an unconstrained Markov Decision Process(MDP) and solved by dynamic programming.And the proposition that two users power-delay surface is a convex surface is proved,which indicates that in CDMA downlink multi-user system,increasing the delay can save power and average delay and power still has a convex function.Simulation result shows the relationship is established correctly.
Keywords:CDMA downlink  optimization schedule  Markov Decision Process(MDP)  delay  power
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