Doppler-resistant reception of multifrequent M-ary orthogonal chaotic broadband signals for mobile multimedia communications

A. R. Saltykov

  Устойчивый к эффекту Доплера прием М-ичных ортогональных хаотических широкополосных сигналов длп мобильных мультимедийных систем передачи информации(3,44 MB)

Abstract

In this paper the application of novel multicarrier M-ary orthogonal chaotic spread spectrum signals (MC-MO-CSSS) for Doppler spread spectrum resistant in the conditions of a discrete multi beam signal is considered and analyzed. Characteristics of MC-MO-CSSS with their benefits for modern mobile multimedia communications have been investigated and shown by means of computer simulations.We propose a reception of MC-MO-CSSS with evaluation of channel parameters based on the optimum nonlinear filtering theory methods with discrete-continuous Markov processes. Finally, the analytical estimations of the reception noise stability for both constant channel and channel with uncorrelated Rayleigh fading on subcarriers are carried out.

Keywords:

Multicarrier M-ary orthogonal chaotic spread spectrum signals; Doppler effect; multimedia communication; quadrature components; channel with constant parameters; channel with uncorrelated Rayleigh fadind.

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