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协作CDMA系统上行链路功率控制策略及优化算法研究

Study of Power Control Strategy and Optimum Algorithm for Uplink Channel in a Cooperative Wireless CDMA Network
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摘要 针对协作CDMA系统上行链路功率控制优化算法复杂度过高的问题,提出了一种新的分段式低复杂度的功率控制策略及优化算法,其中系统的功率控制分两个阶段,前后两阶段分别采用分布式的功率控制优化算法和基于几何规划的功率控制优化算法。理论分析和数值仿真结果表明,功率控制优化算法对信道信息要求低、运算量小、复杂度低、收敛速度快,且收敛于全局最优。 Considering the power control optimum algorithm presented in the previous work for the uplink channel in the cooperative wireless CDMA network was high-complexity,a new two-phase low-complexity power control strategy and optimum algorithm is presented here.In the two phases,the distributed and geometric-programming-based power control optimum algorithms are applied respectively.The theoretic analysis and numerical simulation results show that the power control optimum algorithm presented in this paper has less channel information requirement,low computational complexity and fast convergence rate,and it can obtain the global optimal solution.
作者 黄高飞 张萍 张广驰 唐冬 秦家银
机构地区 中山大学电子与通信工程系 广州大学电子信息工程系
出处 《中山大学学报（自然科学版）》 CAS CSCD 北大核心 2010年第6期31-35,共5页 Acta Scientiarum Naturalium Universitatis Sunyatseni
基金 国家自然科学基金和广东省联合基金资助项目(U0635003) 中山大学重大项目培育资助项目(0lgzd06) 广州市科技计划资助项目(2009J1-C421-2) 广州市教育局科技计划资助项目(08C061)
关键词 协作通信 码分多址(CDMA) 功率控制 cooperative communication Code Division Multiple Access（CDMA） power control
分类号 TN92 [电子电信—通信与信息系统]
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中山大学学报（自然科学版）
2010年 第6期

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