电信科学 ›› 2016, Vol. 32 ›› Issue (8): 39-45.doi: 10.11959/j.issn.1000-0801.2016223

• 研究与开发 • 上一篇    下一篇

5G过载零星传输系统中的多用户检测技术性能分析

马国玉1,艾渤1,胡显安1,蒋笑冰2   

  1. 1 北京交通大学轨道交通与安全国家重点实验室,北京 100044
    2 中国铁道科学研究院,北京 100081
  • 出版日期:2016-08-20 发布日期:2017-04-26
  • 基金资助:
    国家高技术研究发展计划(“863”计划)基金资助项目;北京市科学技术委员会资助项目;陕西省基础研究基金资助项目

Performance analysis of multi-user detection of 5G overloaded sporadic system

Guoyu MA1,Bo AI1,Xian’an HU1,Xiaobing JIANG2   

  1. 1 State Key Lab of Rail Traffic Control and Safety,Beijing Jiaotong University,Beijing 100044,China
    2 China Academy of Railway Sciences,Beijing 100081,China
  • Online:2016-08-20 Published:2017-04-26
  • Supported by:
    The National High Technology Research and Development Program of China(863 Program);Beijing Science and Technology Commission Project;The Natural Science Base Research Plan in Shaanxi Province of China

摘要:

目前,机器通信具有大规模连接及零星传输的特点,大规模连接导致系统必须使用非正交的接入方式,而零星传输的特性则使接入用户行为具有稀疏性。基于以上特性,相关文献提出了基于压缩感知的多用户检测技术。从用户行为及用户数据的检测性能方面对多用户检测技术进行分析研究,并通过仿真分析得出新的结论:尽管非正交扩频码的互相关性会影响接收端对用户行为及用户数据的检测性能,但CS-MUD 仍然可以有效地支持大规模连接用户下稀疏传输的场景。

关键词: 机器通信, 非正交扩频, 压缩感知

Abstract:

Currently,MTC has two main characteristics:massive connectivity and sporadic transmission.Massive connectivity makes the access behavior non-orthogonal and the sporadic characteristic makes the user activity sparsity.Based on those characteristics,some literatures introduce a corresponding detection technique called compressive sensing based multi-user detection.Performance of multi-user detection technique was analyzed by evaluating the user activity detection performance and the user data detection performance.The simulation results conclude that the detection performance will be influenced by the cross correlation between the non-orthogonal spreading sequences,but CS-MUD can still support the massive connection scenario in which the user activity is sparse.

Key words: machine type communication, non-orthogonal spreading, compressive sensing

No Suggested Reading articles found!