5G过载零星传输系统中的多用户检测技术性能分析

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。...

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Bibliographic Details
Published in电信科学 Vol. 32; no. 8; pp. 39 - 45
Main Author 马国玉 艾渤 胡显安 蒋笑冰
Format Journal Article
LanguageChinese
Published 中国通信学会 01.08.2016
人民邮电出版社有限公司
北京交通大学轨道交通与安全国家重点实验室,北京,100044%中国铁道科学研究院,北京,100081
Subjects
压缩感知
机器通信
非正交扩频
非正交扩频
机器通信
压缩感知
machine type communication
non-orthogonal spreading
compressive sensing
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Summary: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。
Bibliography:MA Guoyu, AI Bo, HU Xian＇an, JIANG Xiaobing（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）
machine type communication, non-orthogonal spreading, compressive sensing
11-2103/TN
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 s
ISSN:1000-0801
DOI:10.11959/j.issn.1000-0801.2016223