Technology of Network & Communication
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App. Res. of Comp. Printed Article
Vol. 36, 2019 No. 4
1186-1188,1192

Generalized code index modulation based on direct sequence spread spectrum

Jiang Zhilin1
Yang Qin2
Feng Sheng1
Ge Lijia1,2
1. Chongqing Key Laboratory of Mobile Communication Technology, Chongqing University of Posts & Telecommunications, Chongqing 400065, China
2. Chongqing Key Laboratory of Emergency Communication, Communication NCO Academy of Army Engineering University, Chongqing 400035, China
DOI: 10.19734/j.issn.1001-3695.2017.11.1014

Abstract

To deal with the problem that CIM should consume a lot of pseudo noise(PN) code resources when it increased the information transmission rate by increasing the number of mapping bits. This paper proposed a novel generalized code index modulation(GCIM). It divided the information bits of the transmitter into mapped bits and modulation bits and mapping modulation bits and mapped bits into modulation symbol and the indexes of the PN code groups respectively. The in-phase part and the orthogonal part of the modulation symbol spread spectrum by selecting activate PN code group respectively. What's more, by increasing the number of the activate PN code of per transmission slot, which could increase the number of mapped bits and improved the spectral efficiency and energy efficiency of the system. The simulation results show that it is not better than CIM about 2 dB in the additive white Gaussian noise channel and about 1 dB in the Rayleigh fading channel at the same spectral efficiency. Nevertheless, compared with CIM, GCIM consumes significantly less PN code resources.

Foundation Support

国家自然科学基金资助项目(61271251)
重庆市社会事业与民生保障科技创新专项项目(cstc2017shmsA40002)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2017.11.1014
Publish at: Application Research of Computers Printed Article, Vol. 36, 2019 No. 4
Section: Technology of Network & Communication
Pages: 1186-1188,1192
Serial Number: 1001-3695(2019)04-050-1186-03

Publish History

[2019-04-05] Printed Article

Cite This Article

江治林, 杨勤, 冯胜, 等. 直接序列扩频广义码索引调制 [J]. 计算机应用研究, 2019, 36 (4): 1186-1188,1192. (Jiang Zhilin, Yang Qin, Feng Sheng, et al. Generalized code index modulation based on direct sequence spread spectrum [J]. Application Research of Computers, 2019, 36 (4): 1186-1188,1192. )

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  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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