基于资源块星座图的稀疏码多址接入码本设计

doi:10.11959/j.issn.1000-436x.2018154

通信学报 ›› 2018, Vol. 39 ›› Issue (9): 1-9.doi: 10.11959/j.issn.1000-436x.2018154

• 论文Ⅰ：5G及认知协作网络 • 下一篇

基于资源块星座图的稀疏码多址接入码本设计

邵小桃,郭鸣坤(),杨维

北京交通大学电子信息工程学院，北京 100044

修回日期:2018-08-04 出版日期:2018-09-01 发布日期:2018-10-19
作者简介:邵小桃（1965-），女，陕西西安人，北京交通大学副教授、硕士生导师，主要研究方向为电磁场与微波技术和无线通信技术。|郭鸣坤（1995-），男，湖南益阳人，北京交通大学硕士生，主要研究方向为面向第五代移动通信的新型多址接入技术。|杨维（1964-），男，北京人，博士，北京交通大学教授、博士生导师，主要研究方向为宽带移动通信系统与专用移动通信。
基金资助:
国家重点研发计划基金资助项目(2016YFC0801800);国家自然科学基金资助项目(51474015)

SCMA codebook design based on resource block constellation

Xiaotao SHAO,Mingkun GUO(),Wei YANG

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

Revised:2018-08-04 Online:2018-09-01 Published:2018-10-19
Supported by:
The National Key Research and Development Program of China(2016YFC0801800);The National Natural Science Foundation of China(51474015)

摘要/Abstract

摘要：

针对基于多维母星座图的典型稀疏码多址接入（SCMA,sparse code multiple access）码本设计方法存在设计复杂度高和资源块上星座点之间的最小欧氏距离难以确定的问题，提出了一种基于资源块星座图的SCMA码本设计方法。所提方法通过将多维母星座图的设计转化为二维资源块星座图的设计，降低了星座图的设计复杂度；从资源块星座图出发的码本设计方法能最大化资源块上星座点之间的最小欧氏距离，较之由多维母星座图得到用户码本的设计方法性能更好。仿真结果表明，基于资源块星座图的SCMA码本设计方法相较基于多维母星座图的典型码本设计方法，系统的误比特率（BER,bit error rate）性能有较显著的改善。

关键词: 稀疏码多址接入, 码本设计, 多维母星座图, 资源块星座图

Abstract:

Aiming at the problems of typical sparse code multiple access codebook design scheme based on multidimensional mother constellation that the complexity is high and the minimum Euclidean distance between constellation points on resource blocks is difficult to determine,a SCMA codebook design scheme based on resource block constellation was proposed.By converting the design of multidimensional mother constellation into the design of two-dimensional resource block constellation,the design complexity of constellation was reduced.And the codebook design scheme starting from resource block constellation could maximize the minimum Euclidean distance between constellation points on resource blocks,which was better than the design method in which user codebooks were obtained from multi-dimensional mother constellation.Simulation results show that the proposed SCMA codebook design scheme based on resource block constellation can significantly improve the BER performance of system compared with the typical codebook design scheme based on multidimensional mother constellation.

Key words: sparse code multiple access, codebook design, multidimensional mother constellation

中图分类号:

TN914.5

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.

Xiaotao SHAO,Mingkun GUO,Wei YANG. SCMA codebook design based on resource block constellation[J]. Journal on Communications, 2018, 39(9): 1-9.

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参数	取值
N	2
K	4
J	6
M	4
d_f	3
F	图2

参数	取值1	取值2
N	2	2
K	4	6
J	6	9
M	4	4
d_f	3	3
F	图2	图8

参数	取值1	取值2
N	2	3
K	4	6
J	6	8
M	4	4
d_f	3	4
F	图2	图10

基于资源块星座图的稀疏码多址接入码本设计

SCMA codebook design based on resource block constellation

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