역방향 DCSK를 이용한 카오스기반 통신 시스템
Chaos based Communication System Using Reverse DCSK
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초록
본 논문에서는 낮은 비용과 높은 신뢰성 그리고 데이터율이 좋은 비-코히어런트 카오스 통신을 위한 역방향 차동 카오스편이변조(Reverse Differential Chaos Shift Keying, RE-DCSK) 시스템을 제안한다. RE-DCSK의 참조 신호들은 기존 차동카오스 편이 변조 방식(DCSK)에서처럼 첫 번째 슬롯에서 전송하며 두 번째 슬롯에서는 시간 반전 블록이 카오스 신호의 자기상관 관계를 강화시키고 두 신호의 직교성을 이용하여 정보신호의 역할을 한다. RE-DCSK는 시스템의 복잡성에 따르는어떠한 추가 비용도 없이 DCSK와 비교했을 때 상대적으로 두 배의 전송률을 가능하게 하고 통신의 보안 성능도 역시 향상시킨다. 그 효율성을 입증하기 위해 도출한 BER 표현식을 기반으로 레일리 페이딩 채널과 부가 백색 가우시안잡음(AWGN)채널을 통하여 분석한다. 제안한 시스템의 BER 성능은 AWGN 채널을 사용한 상호지연 편이변조 방식(CDSK)와 DCSK 시스템과 비교하였을 경우 성능이 향상된다.
Abstract
In this paper, we propose a Reverse Differential Chaos Shift Keying (RE-DCSK) system for low cost, high reliabilityand high data rate non-coherent chaos communication .In RE-DCSK, reference signals are transmitted in the first slotas in the conventional differential chaos shift modulation scheme (DCSK) and in the second slot a time inversion blockstrengthens the autocorrelation of the chaos signal and uses the orthogonality of the two signals to obtain theinformation signal. RE-DCSK enables relatively double the data rate compared to DCSK and also improves the securityof communications without any additional cost of system complexity.To prove its effectiveness, we analyze it throughRayleigh fading channel and additional white Gaussian noise (AWGN) channel based on the derived BER expression. The BER performance of the proposed system is improved when compared with the CDSK and DCSK system usingAWGN channel.
참고문헌 (11)
- Chi-Chung Chen, "Stochastic-calculus-based numerical evaluation and performance analysis of chaotic communication systems", IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 47(12), pp.1663~1672 (2000), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
- G. Kolumbán, "Differential chaos shift keying：A robust coding for chaotic communication", Proc. NDES, pp.87~92 (1996)
- M. Sushchik, "Performance analysis of correlation-based communication schemes utilizing chaos", IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 47(12), pp.1684~1691 (2000), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
- Georges Kaddoum, "Design and Analysis of a Multi-Carrier Differential Chaos Shift Keying Communication System", IEEE Transactions on Communications, 61(8), pp.3281~3291 (2013), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
- Z. Galias, "Quadrature chaos-shift keying: theory and performance analysis", IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 48(12), pp.1510~1519 (2001), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
- ELEONORA BILOTTA, "ARTIFICIAL MICRO-WORLDS PART II: CELLULAR AUTOMATA GROWTH DYNAMICS", International Journal of Bifurcation and Chaos, 21(03), pp.619~645 (2011), World Scientific Pub Co Pte Lt[DOI]
- 장은영, "짧은 참조신호를 이용한 차동 카오스 편이 변조의 성능 최적화", 한국전자통신학회 논문지, 14(3), pp.453~460 (2019), 한국전자통신학회[DOI]
- G. Kaddoum, "A Methodology for Bit Error Rate Prediction in Chaos-based Communication Systems", Circuits, Systems and Signal Processing, 28(6), pp.925~944 (2009), Springer Science and Business Media LLC[DOI]
- Y. Xia, "Performance of Differential Chaos-Shift-Keying Digital Communication Systems Over a Multipath Fading Channel With Delay Spread", IEEE Transactions on Circuits and Systems II: Express Briefs, 51(12), pp.680~684 (2004), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
- F. C. M. Lau, "Chaos-based digital communication systems" (2003), Springer
- G. Kaddoum, "A generalized methodology for bit-error-rate prediction in correlation-based communication schemes using chaos", IEEE Communications Letters, 13(8), pp.567~569 (2009), Institute of Electrical and Electronics Engineers (IEEE)[DOI]