DATA TRANSMISSION SYSTEM Russian patent published in 1994 - IPC

FIELD: electric communication. SUBSTANCE: data transmission system includes on transmitting side: input matching unit, coder, first permanent storage, signals converter, digital-to-analog converter, low-pass filter, output matching unit, second permanent storage, filter incorporating multipliers, unit of backward fast Fourier transform and unit of fast Fourier transform; on receiving side: input matching unit, analog-to-digital converter, storage, multiplier, clock pulse generator, controlled divider, program counter, subtracter, first and second adders, unit of fast Fourier transform, computer, decoder, output matching unit and adaptive corrector composed of indication counter, noise indicator, divider, unit of fast Fourier transform, unit of backward fast Fourier transform, indicator of frequency characteristics, permanent storage, unit of standard signals, multiplier, correction units, storages, counters, subtracters, amplifier with falling amplitude-frequency characteristic. Improved noise suppression in communication channel is conducted. EFFECT: reduced level of noises. 2 dwg