DEVICE FOR SHAPING ASSEMBLIES OF BINARY KEYED COMPLEX RADIO SIGNALS USING INDIRECT FREQUENCY SYNTHESIZERS

摘要

A device for shaping assemblies of binary keyed complex radio signals using indirect frequency synthesizers comprises shaping two type signals presented as square radio pulses which are put in correspondence with binary sequence symbols of manipulating sequence to transit information over a communication channel. Both signals from assembly are presented as square radio pulses having complex angle modulation that correspond to two opposite directed frequency transients and are synthesized with help of indirect frequency synthesizer basing on a second order phase-locked system during dynamic transient which occurs in the second order phase-locked system as a response to step change of division factor of the frequency divider in feedback. In frequency synthesizer it is necessary to provide quasi-periodical mode of the transient, duration is chosen to minimise error probability of coherent reception of signal from chosen assembly over channel with Additive White Gaussian Noise providing that manipulating symbols being equiprobable and independent.