F. C. M. Lau, C. K. Tse (auth.)'s Chaos-Based Digital Communication Systems: Operating PDF

By F. C. M. Lau, C. K. Tse (auth.)

ISBN-10: 3642056164

ISBN-13: 9783642056161

ISBN-10: 3662051834

ISBN-13: 9783662051832

This publication addresses the applying of chaos in verbal exchange platforms. An rising self-discipline, chaos-based verbal exchange has been a big study subject long ago 20 years. This publication specializes in very important facets of the procedure operation, research, and function evaluate of chosen chaos-based conversation platforms, e.g., chaos-shift-keying (CSK) and differential CSK (DCSK) platforms. The booklet is written for graduate point readership.

The major emphases are research ideas and function reviews. Chaos-based conversation structures are spread-spectrum platforms, and as a result should still supply a number of entry and are anticipated to own anti-jamming services. The functionality of the chaos-based electronic verbal exchange platforms less than multi-user environments is studied intimately. This e-book presents thorough reviews of the anti-jamming features of chaos-based electronic communique platforms lower than single-tone jammers and pulsed-noise jammers. an in depth research of the level of mutual interference within the most probably functional occasion that chaos-based platforms and standard platforms function in shared frequency bands is additionally given. additionally, a few chosen study issues are mentioned, e.g., detection equipment, a number of entry innovations, etc.

Being examine orientated, the ebook will locate curiosity between researchers, professors, graduate scholars, know-how builders, and R&D engineers in communications. mostly, readers will enjoy the specific exposition of research tools and the thorough reviews of chaos-based structures. particularly, researchers who're new to the sector will quick get accustomed to the mandatory analytical concepts for learning chaos-based electronic communique structures, whereas skilled researchers will locate the various benchmark effects invaluable for reference and extra study.

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Additional info for Chaos-Based Digital Communication Systems: Operating Principles, Analysis Methods, and Performance Evaluation

Example text

Produced by one of those chaos-based modulation schemes discussed earlier. The receiver first retrieves the chaotic information-bearing signal in a conventional manner, then applies the appropriate demodulation scheme to recover the information. 2 Lowpass Equivalent Model For most practical purposes, the study of bandpass communication systems is more conveniently carried out in terms of their baseband equivalent systems [Proakis and Salehi (1994)J. 6 Discrete-Time Baseband Equivalent Models 37 a lowpass equivalent system on which analysis can be performed more easily and in a more unified way.

Obviously, the optimal threshold (mid-way between E[Ec(ln)] and E[Ec(ln)]) is dependent upon the SNR, and this threshold-shift problem remains the major drawback of this type of bit-energy-based non-coherent eSK system. 4 Differential Chaos Shift Keying The differential chaos-shift-keying (DeSK) modulation scheme was proposed to facilitate non-coherent detection [Kolumban et al. (1996)], and in particular to combat the problem of threshold shift as we have seen for the case of the non-coherent eSK system discussed in Sect.

35), we observe that if we normalize the discrete noise source and model it as a Gaussian random variable with zero-mean and variance N o/2 [Sushchik et al. (2000)], then ( can be directly computed from Eb/ No. For notational brevity, throughout this book, we use Eb/ No to denote the bit-energy-tonoise-power-spectral-density ratio, which has been the custom in much of the literature. As a final remark before closing this chapter, the aforementioned discretetime modelling approach is equally applicable to the analysis of conventional direct-sequence spread-spectrum systems where the binary symbols are spread by an aperiodic real chaotic sequence {cd with a spreading factor of 2(3.

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Chaos-Based Digital Communication Systems: Operating Principles, Analysis Methods, and Performance Evaluation by F. C. M. Lau, C. K. Tse (auth.)


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