Open AccessAmbient Backscatter Communication Design over DCSK Signals
Author(s) -
Ronghua Luo,
Hua Yang,
Hua Shi,
Jun Lei
Publication year - 2021
Publication title -
international journal of bifurcation and chaos in applied sciences and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.761
H-Index - 103
eISSN - 1793-6551
pISSN - 0218-1274
DOI - 10.1142/s0218127421502217
Subject(s) - computer science , interference (communication) , bit error rate , detector , waveform , modulation (music) , backscatter (email) , rayleigh fading , signal (programming language) , electronic engineering , noise (video) , keying , channel (broadcasting) , phase shift keying , fading , telecommunications , acoustics , physics , wireless , engineering , artificial intelligence , radar , image (mathematics) , programming language
In this paper, a novel ambient backscatter communication system is proposed, in which Differential Chaos Shift Keying (DCSK) modulation signals are adopted as ambient RF source. In order to cancel out the strong direct-link interference as well as reduce the noise impact, a joint design of modulation waveform and signal detector is proposed, and averaging operation is applied to suppress the noise. By comparing correlation values obtained from the reference and information-bearing signals, information bits can be recovered without setting the detection threshold, resulting in reduced detector complexity. The bit error rate (BER) expression over Rayleigh fading channel is derived. The effects of various parameters on the BER performance are also analyzed. Finally, simulation results are provided to verify the advantages of the proposed system.