一种基于距离谱的稀疏码多址接入码本设计

doi:10.13190/j.jbupt.2018-153

北京邮电大学学报 ›› 2019, Vol. 42 ›› Issue (3): 1-6,28.doi: 10.13190/j.jbupt.2018-153

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一种基于距离谱的稀疏码多址接入码本设计

郭鸣坤, 邵小桃, 杨维

北京交通大学电子信息工程学院, 北京 100044

收稿日期:2018-07-16 出版日期:2019-06-28 发布日期:2019-06-20
通讯作者: 邵小桃(1965-),女,副教授,硕士生导师,E-mail:xtshao@bjtu.edu.cn. E-mail:xtshao@bjtu.edu.cn
作者简介:郭鸣坤(1995-),男,硕士生.
基金资助:
国家重点研发计划项目（2016YFC0801800）；国家自然科学基金项目（51474015）

A SCMA Codebook Design Based on Distance Spectrum

GUO Ming-kun, SHAO Xiao-tao, YANG Wei

School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2018-07-16 Online:2019-06-28 Published:2019-06-20

摘要/Abstract

摘要： 由多维星座经星座运算得到用户码本的典型稀疏码多址接入（SCMA）码本设计方案中，多维星座设计的复杂度和最优星座运算确定的难度实际上增加了码本设计难度，对此，分析了SCMA码本对消息传递算法（MPA）具体过程的影响，提出了一种以最大化距离谱最小元素为准则的SCMA码本设计方案.所提方案将多维星座的设计和星座运算的确定过程转化为简单的码本设计参数选择过程.在不影响用户码本唯一可译码性的前提下，通过替换部分码本设计参数，降低了参数选择复杂度.仿真结果表明，采用所提基于距离谱的码本设计方案与现有的码本设计方案相比，系统的误比特率性能有显著改善.

关键词: 稀疏码多址接入, 码本设计, 消息传递算法, 距离谱

Abstract: Aiming at the problem that the complexity of multidimensional constellation design, and the difficulty of determining optimal constellation operators actually increase the difficulty of codebook design in the typical sparse code multiple access(SCMA) codebook design scheme, which gets user codebooks from a multidimensional constellation via the constellation operation, the influence of user codebooks on the specific process of message passing algorithm(MPA) is analyzed, and a codebook design scheme based on maximizing the minimum element of the distance spectrum is proposed. The scheme transforms the process of multidimensional constellation design, and constellation operators determination into a simple codebook design parameter selection process. Without affecting the unique decodability of user codebooks, the complexity of parameter selection is reduced by replacing some codebook design parameters. Simulations show that compared with the existing SCMA codebook design schemes, the scheme based on distance spectrum can significantly improve the bit error rate performance of system.

Key words: sparse code multiple access, codebook design, message passing algorithm, distance spectrum

中图分类号:

TN914.5

郭鸣坤, 邵小桃, 杨维. 一种基于距离谱的稀疏码多址接入码本设计[J]. 北京邮电大学学报, 2019, 42(3): 1-6,28.

GUO Ming-kun, SHAO Xiao-tao, YANG Wei. A SCMA Codebook Design Based on Distance Spectrum[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2019, 42(3): 1-6,28.

参考文献

[1] Nikopour H, Baligh H.Sparse code multiple access[C]//IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications.New York:IEEE Press, 2013:332-336.
[2] Wang Bichai, Wang Kun, Lu Zhaohua, et al.Comparison study of non-orthogonal multiple access schemes for 5G[C]//IEEE International Symposium on Broadband Multimedia Systems and Broadcasting.New York:IEEE Press, 2015:1-5.
[3] Chen Yan, Bayesteh A, Wu Yiqun, et al.SCMA:a promising non-orthogonal multiple access technology for 5G networks[C]//IEEE Vehicular Technology Conference.New York:IEEE Press, 2016:1-6.
[4] Taherzadeh M, Nikopour H, Bayestech A, et al.SCMA codebook design[C]//IEEE Vehicular Technology Conference.New York:IEEE Press, 2014:1-5.
[5] Cai Donghong, Fan Pingzhi, Lei Xianfu, et al.Multi-dimensional SCMA codebook design based on constellation rotation and interleaving[C]//IEEE Vehicular Technology Conference.New York:IEEE Press, 2016:1-5.
[6] Yu Lisu, Lei Xianfu, Fan Pingzhi, et al.An optimized design of SCMA codebook based on star-QAM signaling constellations[C]//International Conference on Wireless Communications & Signal Processing.New York:IEEE Press, 2015:1-5.
[7] Bao Jinchen, Ma Zheng, Mahamadu M A, et al.Spherical codes for SCMA codebook[C]//IEEE Vehicular Technology Conference.New York:IEEE Press, 2016:1-5.
[8] Beko M, Dinis R.Designing good multi-dimensional constellations[J].IEEE Wireless Communications Letters, 2012, 1(2):221-224.
[9] Alam M, Zhang Qi.Performance study of SCMA codebook design[C]//IEEE Wireless Communications and Networking Conference.New York:IEEE Press, 2017:1-5.
[10] Yang Lin, Liu Yunyun, Siu Yunming.Low complexity message passing algorithm for SCMA system[J].IEEE Communications Letters, 2016, 20(11):2466-2469.
[11] 杜洋, 董彬虹, 王显俊, 等.基于串行策略的SCMA多用户检测算法[J].电子与信息学报, 2016, 38(7):1888-1893.Du Yang, Dong Binhong, Wang Xianjun, et al.Multiuser detection scheme for SCMA systems based on serial strategy[J].Journal of Electronics & Information Technology, 2016, 38(7):1888-1893.
[12] Beek J V D, Popovic B M.Multiple access with low-density signatures[C]//IEEE Global Telecommunications Conference.New York:IEEE Press, 2009:1-6.
[13] Proakis J G, Salehi M.Digital communication[M].New York:McGraw-Hill Book Co., 2007:182-188.
[14] 吴昊, 张建秋, 宋汉斌.一种基于格理论构造高维星座图的方法[J].电子学报, 2014, 42(8):1672-1679.Wu Hao, Zhang Jianqiu, Song Hanbin.A lattice based approach to the construction of multi-dimensional signal constellations[J].Acta Electronica Sinica, 2014, 42(8):1672-1679.
[15] 邵小桃, 郭鸣坤, 杨维.基于资源块星座图的稀疏码多址接入码本设计[J].通信学报, 2018, 39(9):1-9.Shao Xiaotao, Guo Mingkun, Yang Wei.SCMA codebook design based on resource block constellation[J].Journal on Communications, 2018, 39(9):1-9.

一种基于距离谱的稀疏码多址接入码本设计

A SCMA Codebook Design Based on Distance Spectrum

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