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

• research and development • Previous Articles     Next Articles

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

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

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