Technology of Network & Communication
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App. Res. of Comp. Printed Article
Vol. 36, 2019 No. 7
2130-2133

Technique of modulation and demodulation based on multi-carrier and multi chirp-basis

Xiao Mianhe
Zheng Lin
Yang Chao
Key Laboratory of Wideband Wireless Communications & Signal Processing, Guilin University of Electronic Science & Technology, Guilin Guangxi 541004, China
DOI: 10.19734/j.issn.1001-3695.2018.02.0108

Abstract

The multi-band chirp-BOK modulation is based on chirp signal, which has problem of non-related items self-interference in traditional detection scheme which is matching filtering method(MF). The MF has lower bit error rate performance in the case of a larger number of sub-bands or smaller chirp-based bandwidth. This paper established a mathematical model with multi-band chirp signals and proposed a simple modulation workflow based on the model, it could use the least square(LS) method to solve the self-interference problem of matched filter. LS method could provide a better SNR gain compared with the MF. Further, it proposed a multi-band multi-chirp-based modulation technique(MMCM) by analyzing the multi-band chirp-BOK technique. MMCM technology could flexibly adjust the relationship between code rate and spread-spectrum gain. MMCM had the same frequency band utilization as OFDM technology with spread spectrum gain of 0 dB. For the case that the number of source groups of MMCM is J and the time-bandwidth product is P, the system processing gain is P/J.

Foundation Support

国家自然科学基金资助项目(61571143,61371107)
通信网信息传输与分发技术重点实验室开放课题(KX172600033)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2018.02.0108
Publish at: Application Research of Computers Printed Article, Vol. 36, 2019 No. 7
Section: Technology of Network & Communication
Pages: 2130-2133
Serial Number: 1001-3695(2019)07-046-2130-04

Publish History

[2019-07-05] Printed Article

Cite This Article

肖绵合, 郑霖, 杨超. 一种多带多chirp基调制解调技术 [J]. 计算机应用研究, 2019, 36 (7): 2130-2133. (Xiao Mianhe, Zheng Lin, Yang Chao. Technique of modulation and demodulation based on multi-carrier and multi chirp-basis [J]. Application Research of Computers, 2019, 36 (7): 2130-2133. )

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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.

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