University of Oulu

M. Miao, L. Wang, M. Katz and W. Xu, "Hybrid Modulation Scheme Combining PPM With Differential Chaos Shift Keying Modulation," in IEEE Wireless Communications Letters, vol. 8, no. 2, pp. 340-343, April 2019. doi: 10.1109/LWC.2018.2871137

Hybrid modulation scheme combining PPM with differential chaos shift keying modulation

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Author: Miao, Meiyuan1; Wang, Lin1; Katz, Marcos2;
Organizations: 1Department of Communication Engineering, Xiamen University, Xiamen 361005, China
2Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-04-16


In conventional M-ary differential chaos shift keying modulation (DCSK) systems, the distance between constellation points gets closer as M increases, resulting in poor performance. A hybrid modulation scheme based on pulse position modulation (PPM) and DCSK is proposed in this letter to improve bit-error-rate (BER) performance. In this scheme, one part of the bits is modulated by PPM while the other part is modulated by DCSK. Thus, information bearing signals are simultaneously modulated by the information bit and the selected pulse position of PPM which is determined by extra information bits. Analytical BER performance of the proposed scheme is derived and verified by simulations. Results show that the considered scheme outperforms conventional M-DCSK, code index modulation DCSK, and commutation code index DCSK in additive white Gaussian noise and multipath Rayleigh fading channels.

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Series: IEEE wireless communications letters
ISSN: 2162-2337
ISSN-E: 2162-2345
ISSN-L: 2162-2337
Volume: 8
Issue: 2
Pages: 340 - 343
DOI: 10.1109/LWC.2018.2871137
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by the National Natural Science Foundation of China under Grant 61671395.
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