Summary

International Symposium on Nonlinear Theory and Its Applications

2016

Session Number:B2L-E

Session:

Number:B2L-E-1

Subcarrier Allocation in Multi-Carrier DCSK System for Performance Enhancement

Hua Yang,  Guo-Ping Jiang,  

pp.-

Publication Date:2016/11/27

Online ISSN:2188-5079

DOI:10.34385/proc.48.B2L-E-1

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Summary:
Recently, multicarrier differential chaos shift keying (MC-DCSK) modulation has been proposed to avoid the usage of delay lines as well as to obtain higher data rate in comparison to DCSK. Thanks to better energy efficiency, MC-DCSK outperforms DCSK in bit error rate (BER) performance, but it still performs much worse than conventional coherent BPSK. This paper shows how to get great improvement in BER performance of MC-DCSK by assigning multiple subcarriers to the reference signal. A novel subcarrier allocated MC-DCSK system is proposed, where every reference signal is transmitted for multiple times on different subcarriers and all received copies are averaged for noise cleaning. With the optimal subcarrier allocation strategy, the proposed system can achieve the lowest BER that is almost identical to that of the conventional coherent BPSK system.