学术
CDMA分层蜂窝移动通信系统的性能分析
蒋占军[1,2] 潘文[1] 王炎[1] 尤肖虎[1]
[1]东南大学移动通信国家重点实验室,南京210096 [2]兰州交通大学电子与信息工程学院,兰州730070
摘 要:
分析了CDMA分层蜂窝移动通信系统（HCMS）网络覆盖特性，在此基础上提出了一种由宏小区和分布式天线系统（DAS）组成的双层HCMS，即宏小／DAS结构，并将其与CDMA宏小区／微小区双层蜂窝系统作了比较。网络覆盖特性分析表明，该网络结构更有利于降低网络建设和功率控制的复杂性；信干比仿真结果表明，该网络结构改善了系统的上下行链路的信干比，从而有利于提高CDMA蜂窝移动通信系统的系统容量。[著者文摘]
文章出处:
《高技术通讯》-2008年18卷3期 -238-242页
栏目信息:
分 类 号:
Performance analysis of CDMA hierarchical cellular mobile system
Jiang Zhanjun , Pan Wen , Wang Yan, You Xiaohu （ National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096; School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070）
Abstract:
Based on the analysis of coverage characteristics of CDMA hierarchical cellular mobile system （HCMS）, the paper proposes a two-layer HCMS which is composed of macrocells and distributed antennas system （DAS）, and presents the comparisons between this system and CDMA macrocell/microcell HCMS. The analysis of coverage characteristics shows that the proposed HCMS makes network engineering and power control easier to be performed. The results of the simulation experiment on signal to interference ratio （SIR） show that SIR in both forward and reverse links can be improved in the proposed HCMS, which helps to increase the capacity of the CDMA cellular mobile system.[著者文摘]
Key words:
CDMA, hierarchical network structure, distributed antennas system, remote access units selection
基金资助:
863计划（2006AA01Z268）及国家自然科学基金重大项目（60496311）资助.
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