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UDC 621.391

SYNTHESIS OF UNIVERSAL QUASI-OPTIMAL DEVICE FOR PROCESSING SPECTRAL EFFICIENT RADIO SIGNAL WITH CONTROLLED COUPLING BETWEEN QUADRATURE COMPONENTS

P. S. Pokrovskij, PhD (technical sciences), engineer, RSREU, Ryazan; This email address is being protected from spambots. You need JavaScript enabled to view it.
S. N. Kirillov, PhD (technical sciences), full professor, Head of the Department, RSREU, Ryazan; This email address is being protected from spambots. You need JavaScript enabled to view it.

The task of developing the universal quasi-optimal device for processing spectral efficient radio signal types is considered. The target is to synthesize one channel algorithm of detecting spectral efficient radio signals with controlled coupling between quadrature components. Quasi-optimal independent processing of signals of in-phase and quadrature components was analyzed in case of additive white gauss noise action. It is shown that in these environments a universal detector of radio signals considered is a sequential connection of a filter with impulse response dependingon radio signal type and a solver. As a result the computer simulation has shown, that the universal processing device proposed provides noise immunity increase by 0.5…0.8 dB in comparison with detecting spectral efficient radio signals with OQPSK-detector. In addition, this device provides 0.3…0.7 dB gain relative to FQPSK-detector in GMSK-type signals and 0.1…0.5 dB loss in FQPSK-type signals. At the same time, this device loss to optimal detector of radio signal with controlled coupling between in phase and quadrature components depends on radio signal parameters and lies within 0 to 2.6 dB.

Key words: spectral efficient radio signals, device synthesis, radio signal detector, noise immunity, universal shaper of radio signals, FQPSK, GMSK, TOQPSK.

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