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计算机工程 ›› 2011, Vol. 37 ›› Issue (5): 19-21,24. doi: 10.3969/j.issn.1000-3428.2011.05.007

• 博士论文 • 上一篇    下一篇

基于CDMA下行链路的功率最优化调度

彭烈新1 ,2,朱光喜3,边海龙2,张连成2,魏志刚2   

  1. (1. 中国石油勘探开发研究院,北京 100083;2. 中国石油钻井工程技术研究院,北京 100083; 3. 华中科技大学电子信息工程系,武汉 430074)
  • 出版日期:2011-03-05 发布日期:2012-10-31
  • 作者简介:彭烈新(1968-),男,高级工程师、博士后,主研方向:无线通信;朱光喜,教授、博士生导师;边海龙,工程师、博士;张连成、魏志刚,工程师、硕士
  • 基金资助:
    国家“863”计划基金资助项目“井下无线电磁波随钻测量技术”(2006AA06A103)

Power Optimization Schedule Based on CDMA Downlink

PENG Lie-xin 1,2, ZHU Guang-xi 3, BIAN Hai-long 2, ZHANG Lian-cheng 2, WEI Zhi-gang 2   

  1. (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)
  • Online:2011-03-05 Published:2012-10-31

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

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.

Key words: CDMA downlink, optimization schedule, Markov Decision Process(MDP), delay, power

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