Download Chaotic Signals in Digital Communications by Marcio Eisencraft, Romis Attux, Ricardo Suyama PDF

By Marcio Eisencraft, Romis Attux, Ricardo Suyama

Chaotic signs in electronic Communications combines basic heritage wisdom with cutting-edge tools for utilizing chaotic indications and structures in electronic communications. The booklet builds a bridge among theoretical works and sensible implementation to aid researchers reach constant functionality in lifelike environments. It indicates the prospective shortcomings of the chaos-based communique platforms proposed within the literature, fairly after they are subjected to non-ideal stipulations. It additionally provides a toolbox of options for researchers operating to really enforce such systems.

A blend of Tutorials and In-Depth, state of the art Research

Featuring contributions through energetic top researchers, the booklet starts with an creation to conversation thought, dynamical platforms, and chaotic communications compatible for these new to the sector. This lays a high-quality beginning for the extra utilized chapters that stick with.

A Toolbox of Techniques—Including New how you can take on Channel Imperfections

The publication covers normal chaos conversation tools, specifically chaotic overlaying, chaotic modulation, chaotic shift key, and symbolic message bearing, in addition to bidirectional verbal exchange and safe verbal exchange. It additionally offers novel methodologies to accommodate verbal exchange channel imperfections. those take on band-limited channel chaos conversation, radio channels with fading, and the resistance of a unique chaotic sign to multipath propagations. moreover, the ebook addresses themes concerning engineering functions, similar to optical communications, chaotic matched filters and circuit implementations, and microwave frequency-modulated differential chaos shift keying (FM-DCSK) systems.

Insights for either Theoretical and Experimental Researchers

Combining idea and perform, this e-book deals a distinct point of view on chaotic conversation within the context of non-ideal stipulations. Written for theoretical and experimental researchers, it tackles the sensible concerns confronted in imposing chaos-based indications and structures in electronic communications applications.

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Extra info for Chaotic Signals in Digital Communications

Sample text

5 M -ary quadrature amplitude modulation . . 6 M-ary frequency shift keying . . . . . . . . . 2 Performance of digital communication schemes in AWGN . . . . . . . . . . . . . . . . . . . . . . . . . . Band-limited transmission . . . . . . . . . . . . . . . . . . . . 1 Nyquist criteria for zero ISI . . . . . . . . . . . . . . . Equalization . . . . . . . . . . . . . . . . . . . . . . . 1 ZF equalization .

1 Definition of the signal space . . . . . . . . . . . . . . 2 Gram-Schmidt and the geometric representation of signals . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Karhunen-Loeve and the geometric representation of noise . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Optimum receiver structure (MAP/ML criteria) . . . . 5 Decision region and error probability .

Let us now show how those previously discussed topics can be combined to result in a very efficient chaos-based communication system. In this approach, a chaotic waveform is used to transmit messages that are codified in a chaotic invariant set [19]. 8. In this approach, the information to be transmitted is codified in a Chua circuit [20] using the method of codification by feedback control of symbolic dynamics previously discussed. The codified information (m1 ) is added just after the system chaotic carrier output (x1 ) and the resulted transmitted signal (s) is injected into the feedback path and so incorporated into the system dynamics that provides the chaotic carrier.

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