Design and performance analysis of a robust multi-carrier M-ary DCSK system: A noise suppression perspective

Document Type

Journal Article

Publication Title

IEEE Transactions on Communications

Volume

70

Issue

3

Publisher

IEEE

School

School of Engineering

RAS ID

52361

Funders

National Natural Science Foundation of China (Grant number ID 13-3124)

Comments

Cai, X., Xu, W., Wang, L., & Kolumbán, G. (2022). Design and performance analysis of a robust multi-carrier M-ary DCSK system: A noise suppression perspective. IEEE Transactions on Communications, 70(3), 1623-1637.

https://doi.org/10.1109/TCOMM.2022.3144276

Abstract

A Noise Suppression aided Multi-Carrier M-ary Differential Chaos Shift Keying (NS-MC-MDCSK) system is proposed here where each information subcarrier transmits an M-ary information-bearing signal and the M-ary constellation symbols are constructed by orthogonal Walsh codes to improve the energy efficiency. Exploiting the redundant information available in the received signal, we propose a noise suppression algorithm to suppress channel noise in the reference and M-ary information-bearing signals. In the proposed algorithm, correlation coefficients detected between the received reference and information-bearing signals are fed back to suppress the noise corrupting the signal received. This method reduces the channel noise significantly and provides an outstanding Bit Error Rate (BER) performance. A performance analysis is performed for the NS-MC-MDCSK system over Additive White Gaussian Noise (AWGN) and multipath fading channels. Finally, the BER performance of the NS-MC-MDCSK system is compared to that of other chaotic communications systems. It is shown that the NS-MC-MDCSK system offers better BER performance than its competitors.

DOI

10.1109/TCOMM.2022.3144276

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