基于混沌序列的SCMA码本设计及系统性能分析
Design of SCMA codebook based on chaotic signal and system performance analysis
- 通信学报 2019年40卷第2期 页码：137-144
- 作者机构：
1. 西安电子科技大学通信工程学院，陕西 西安 710071
2. 北京电子科技学院网络空间安全系，北京 100070
- 作者简介：
[ "赵耿（1964- ），男，四川苍溪人，博士，北京电子科技学院教授，主要研究方向为混沌保密通信、信息安全。" ]
[ "马艳艳（1994- ），女，河南洛阳人，西安电子科技大学硕士生，主要研究方向为5G、混沌保密通信。" ]
[ "马英杰（1979- ），女，吉林通化人，北京电子科技学院副教授，主要研究方向为通信系统、混沌保密通信。" ]
- 基金信息：国家自然科学基金资助项目(61772047);国家自然科学基金资助项目(61640216)
DOI：10.11959/j.issn.1000-436x.2019026
中图分类号： TN918-
网络首发：2019-02，
纸质出版：2019-02-25
- 稿件说明：
移动端阅览
赵耿, 马艳艳, 马英杰. 基于混沌序列的SCMA码本设计及系统性能分析[J]. 通信学报, 2019,40(2):137-144.
Geng ZHAO, Yanyan MA, Yingjie MA. Design of SCMA codebook based on chaotic signal and system performance analysis[J]. Journal on Communications, 2019, 40(2): 137-144.
赵耿, 马艳艳, 马英杰. 基于混沌序列的SCMA码本设计及系统性能分析[J]. 通信学报, 2019,40(2):137-144. DOI： 10.11959/j.issn.1000-436x.2019026.
Geng ZHAO, Yanyan MA, Yingjie MA. Design of SCMA codebook based on chaotic signal and system performance analysis[J]. Journal on Communications, 2019, 40(2): 137-144. DOI： 10.11959/j.issn.1000-436x.2019026.
摘要
稀疏码多址接入（SCMA）技术是新一代5G通信技术的多址技术方案之一。针对5G海量用户传输需求问题，提出了用户传输信息时采用 logistic 混沌序列代替原始系统中的随机序列来选择码本。在编码端利用基于网格编码调制（TCM）的子集分割法设计星座图，结合映射矩阵生成码本，用户信息经信道传输后在解码端通过消息传递算法（MPA）进行解码。仿真结果表明，利用混沌的伪随机序列选择码字，系统传输的误码率（BER）较低，且在高过载率情况下系统性能表现良好。
Abstract
Sparse code multiple access (SCMA) technology is one of the multiple access technology schemes for the new generation of 5G.In order to solve the transmission requirement of massive users
the logistic chaos sequence was proposed instead of the random sequence in the original system to select the codeword.The constellation method based on trellis coded modulation (TCM) subset segmentation with the mapping matrix was used to generate codebook in the encoder
and decoded through message passing algorithm (MPA) detection method.The simulation results show that the bit error rate (BER) is low when the system uses the pseudo-random sequence of chaos to select the codeword
and the system also performs well under the condition of high overload rate.
关键词
Keywords
references
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