广义正交码索引调制系统的性能分析

doi:10.11959/j.issn.1000-0801.2022166

电信科学 ›› 2022, Vol. 38 ›› Issue (8): 120-128.doi: 10.11959/j.issn.1000-0801.2022166

广义正交码索引调制系统的性能分析

卞李娜¹, 冯会真¹, 金小萍¹, 楼维中², 瞿崇晓²

¹ 中国计量大学信息工程学院，浙江省电磁波信息技术与计量检测重点实验室，浙江杭州 310018
² 中国电子科技集团公司第五十二研究所，浙江杭州 310018

修回日期:2022-07-14 出版日期:2022-08-20 发布日期:2022-08-01
作者简介:卞李娜（1998- ），女，中国计量大学信息工程学院硕士生，主要研究方向为码索引调制技术和检测技术等
冯会真（1973- ），女，中国计量大学信息工程学院副教授，主要研究方向为无线通信的调制检测技术
金小萍（1978- ），女，博士，中国计量学院信息工程学院副教授，主要研究方向为MIMO系统与协作通信系统中检测技术、空间调制系统信号架构和检测技术等
楼维中（1983- ），男，中国电子科技集团公司第五十二研究所高级工程师，主要研究方向为射频信号高速采集回放、信号处理设计技术及高速大容量采集存储架构等
瞿崇晓（1985- ），男，中国电子科技集团公司第五十二研究所高级工程师，主要研究方向为宽带多信道信号智能采集、宽带信号智能检测、辐射源个体识别等
基金资助:
浙江省自然科学基金资助项目(LY17F010012);浙江省教育厅科研资助项目(Y201840047);国家级大学生创新创业训练计划项目(202110356016);未来网络科研基金项目(FNSRFP-2021-YB-11)

Performance analysis of generalized orthogonal code index modulation system

Lina BIAN¹, Huizhen FENG¹, Xiaoping JIN¹, Weizhong LOU², Chongxiao QU²

¹ Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, China
² The 52nd Research Institute of China Electronics Technology Group Corporation, Hangzhou 310018, China

Revised:2022-07-14 Online:2022-08-20 Published:2022-08-01
Supported by:
The Natural Science Foundation of Zhejiang Province(LY17F010012);The Research Funding Project of Zhejiang Provincial Department of Education(Y201840047);The National College Student Innovation and Entrepreneurship Training Program Project(202110356016);Future Network Scientific Research Fund Project(FNSRFP-2021-YB-11)

摘要/Abstract

摘要：

摘要：为了提高码索引调制（code index modulation，CIM）系统的传输效率，提出了一种具有更低复杂度的单输入单输出（single input single output，SISO）的广义正交码索引调制（generalized orthogonal code index modulation，GQCIM）系统。CIM 系统使用扩频码和星座符号传输信息，但只能激活两个扩频码索引和一个调制符号。而 GQCIM 系统以一种新颖的方式克服了只激活一个调制符号的限制，同时充分利用了调制符号的正交性，增加扩频码索引以传输更多的额外信息位，提高了系统的传输效率。此外，分析了GQCIM系统的理论性能，推导了误码率性能的上界。通过蒙特卡罗仿真验证了GQCIM系统的性能，对比发现GQCIM系统的理论和仿真性能一致。而且在相同的传输效率下，结果显示GQCIM系统的性能优于同样具有正交性的调制系统，如广义码索引调制（generalized code index modulation，GCIM）系统、CIM系统、码索引调制-正交空间调制（code index modulation aided quadrature spatial modulation，CIM-QSM）系统、码索引调制-正交空间调制（code index modulation aided spatial modulation，CIM-SM）系统、脉冲索引调制（pulse index modulation，PIM）系统。

关键词: 广义正交码索引调制, 码索引调制, 平均成对错误概率, 传输效率

Abstract:

In order to improve the transmission efficiency of the code index modulation (CIM) system, a generalized orthogonal code index modulation (GQCIM) system with lower complexity was proposed, which was a single input single output (SISO) system.CIM system used spreading codes and constellation symbols to transmit information, but only activated two spreading code indexes and one modulation symbol.GQCIM system overcame the limitation of only activating one modulation symbol at a time in a novel way, at the same time, made full use of the orthogonality of modulation symbols, increased the spreading code index to transmit more additional information bits, and improved the transmission efficiency of the system.In addition, the theoretical performance of GQCIM system was analyzed and derived the upper bound of bit error rate performance.Then the performance of GQCIM was verified by Monte Carlo simulation, and the theoretical and simulation performance of GQCIM system was found to be consistent.And under the same transmission efficiency, the results show that the performance of GQCIM system is better than the same orthogonal modulation system, such as generalized code index modulation (GCIM) system, CIM system, code index modulation aided quadrature spatial modulation (CIM-QSM) system, code index modulation aided spatial modulation (CIM-SM) system, pulse index modulation (PIM) system.

Key words: generalized orthogonal code index modulation, code index modulation, average pairwise error probabil-ity, transmission rate

中图分类号:

TN929

卞李娜, 冯会真, 金小萍, 楼维中, 瞿崇晓. 广义正交码索引调制系统的性能分析[J]. 电信科学, 2022, 38(8): 120-128.

Lina BIAN, Huizhen FENG, Xiaoping JIN, Weizhong LOU, Chongxiao QU. Performance analysis of generalized orthogonal code index modulation system[J]. Telecommunications Science, 2022, 38(8): 120-128.

图/表 7

图1

表1

L=4，K=1，2，3参考查找表"

比特	激活个数(K=1)	激活个数(K=2)	激活个数(K=3)
{0,0}	${c_{i_{1}}}$	${c_{i_{1}}, c_{i_{2}}}$	${c_{i_{1}}, c_{i_{2}}, c_{i_{3}}}$
{0,1}	${c_{i_{2}}}$	${c_{i_{1}}, c_{i_{3}}}$	${c_{i_{1}}, c_{i_{2}}, c_{i_{4}}}$
{1,0}	${c_{i_{3}}}$	${c_{i_{1}}, c_{i_{4}}}$	${c_{i_{1}}, c_{i_{3}}, c_{i_{4}}}$
{1,1}	${c_{i_{4}}}$	${c_{i_{2}}, c_{i_{3}}}$	${c_{i_{2}}, c_{i_{3}}, c_{i_{4}}}$

表1

图2

图3

图4

图5

图6

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广义正交码索引调制系统的性能分析

Performance analysis of generalized orthogonal code index modulation system

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