基于大系统方法的上行CDM A蜂窝系统性能分析

doi:1000-436X(2011)01-0020-07

通信学报 ›› 2011, Vol. 32 ›› Issue (1): 20-26.doi: 1000-436X(2011)01-0020-07

基于大系统方法的上行CDM A蜂窝系统性能分析

虞凯^1,²,范平志²,郝莉²

¹ 中国中铁二院工程集团有限责任公司通信信号设计研究院，四川成都 610031
² 西南交通大学信息编码与传输四川省重点实验室，四川成都 610031

出版日期:2011-01-25 发布日期:2017-06-19
基金资助:
国家自然科学基金资助项目;国家高技术研究发展计划(“863”计划)基金资助项目;十一五重大专项

Performance analysis of uplink CDM A cellular systems based on the large system method

Kai YU^1,²,Ping-zhi FAN²,Li HAO²

¹ Design ＆Research Institute of Signal ＆Communications,China Railway Eryuan Engineering Group Co.Ltd,Chengdu 610031,China
² Provincial Key Lab of Information Coding ＆Transmissio hwest Jiaotong University,Chengdu 610031,China

Online:2011-01-25 Published:2017-06-19
Supported by:
The National Natural Science Foundation of China;The National High Technology Research and Development Program of China (863 Program);The National Key Science and Technology Project of the Eleventh Five-year Plan of China

摘要/Abstract

摘要：

结合大尺度和小尺度衰落，采用大系统分析方法对 CDMA 蜂窝系统上行链路的性能进行分析。首先分析了小区内多址干扰和小区间干扰的情况；其次推导出了通过匹配滤波器后的信干噪比值，该值只与小区负载、用户功率、信道增益有关；最后分析了系统的误码率、吞吐量和频谱效率，并通过仿真验证了分析的准确性。仿真结果发现，随着小区负载的增大，系统的误码率增大，吞吐量下降，但频谱效率有所提高。

关键词: CDMA, 蜂窝, 随机扩频, 大系统

Abstract:

The performance of uplink of CDMA cellular systems with large and small scale fading was investigated based on the large system analysis.The intra-cell multiple access interference was firstly analyzed as well as the inter-cell interference.Then the signal to interference and noise rat d,the result of which was only dependent on the cell load,user power and channel coefficient.Finally,the bit error rate,throughput and spectrum efficiency were analyzed,which were confirmed by simulations.The simulation results show that as the cell load increases,the bit error rate increases and the throughput decreases.However,the spectrum efficiency increases monotonously.

Key words: CDMA, cellular, random spreading, large system

虞凯,范平志,郝莉. 基于大系统方法的上行CDM A蜂窝系统性能分析[J]. 通信学报, 2011, 32(1): 20-26.

Kai YU,Ping-zhi FAN,Li HAO. Performance analysis of uplink CDM A cellular systems based on the large system method[J]. Journal on Communications, 2011, 32(1): 20-26.

图/表 4

参考文献 18

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基于大系统方法的上行CDM A蜂窝系统性能分析

Performance analysis of uplink CDM A cellular systems based on the large system method

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