METHOD OF GENERATING IN-PHASE AND QUADRATURE COMPONENTS OF COMPLEX ENVELOPE OF SPECTRAL-EFFICIENT RADIO SIGNALS Russian patent published in 2016 - IPC H04L27/32 H04L13/00 H04L7/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to methods of generating radio signals with spectral-efficient modulation types (FBPSK, T-OQPSK, FQPSK, GMSK, FQAM), which are widely used in setting up space information transmission and control radio links. A method of generating in-phase and quadrature components of a complex envelope of spectral-efficient radio signals comprises generating, based on a source transmitted information stream, {x_l} multi-position symbols of in-phase (d_Ii) and quadrature (d_Qi) channels depending on a given modulation mode; generating, through corresponding processing, corresponding sequences of the multi-position symbols d_Ii and d_Qi based on I₁(t) and Q₁(t) signals of the corresponding channels, responsible for the transfer of the said sequences of symbols, additional I₂(t) and Q₂(t) of the corresponding channels, responsible for the intersymbol interference of the said sequences of symbols, and special I'₃(t) and Q'₃(t) signals of the corresponding channels, responsible for communication between the said components of the complex envelope of spectral-efficient radio signals with the synchronisation of moments thereof, and calculating the in-phase I(t) and quadrature Q(t) components of the generated spectral-efficient radio signal in the form of a weighted sum of the said signals of the corresponding channels with two weight coefficients which determine noise-immunity and spectral characteristics of the generated spectral-efficient signal.

EFFECT: enabling the generation of in-phase and quadrature components of the complex envelope of the listed types of spectral-efficient radio signals, as well as 16-position radio signals.

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