TRANSMISSION SIGNAL DIVISION DEVICE FOR DUPLEX COMMUNICATION SYSTEMS Russian patent published in 2004 - IPC

FIELD: duplex signal transfer over communication channels.

SUBSTANCE: device that has series-connected generator, input unit, switch, first digital-to-analog converter, analog-to-digital converter, as well as tutorial signal unit and second digital-to-analog converter is provided in addition with newly introduced series-connected first Fast Fourier Transform unit, in-phase processing unit, inverse Fast Fourier Transform unit whose output is connected to input of second digital-to-analog converter, and quadrature processing unit; series-connected second Fast Fourier Transform unit, first accumulator, divider whose second input is connected to output of second Fast Fourier Transform unit, first calculator, as well as monostable multivibrator whose input is connected to third control input of switch and to fourth inputs of in-phase and quadrature processing units, respectively; monostable multivibrator output is integrated with second input of first accumulator and third inputs of in-phase and quadrature processing units, respectively; output of first calculator is connected, respectively, to fifth inputs of in-phase and quadrature processing units; first input of quadrature processing unit is connected to output of Fast Fourier Transform unit; first and second outputs of quadrature processing unit are connected, respectively, to second input of inverse Fast Fourier Transform unit and to that of in-phase processing unit whose second output is connected to second input of quadrature processing unit; inputs of first and second Fast Fourier Transform units are connected to outputs of analog-to-digital converter and to switch.

EFFECT: enhanced noise immunity of messages received.

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