THE INTELLECTUAL MODEM ON THE BASIS OF MULTIFREQUENCY MODULATION

 

V. G. Sannikov

Moscow Technical University of Communications and Informatics

 

The paper is received on December 29, 2014

 

Abstract. The method of transmission of the discrete messages on the basis of the intellectual modem with multifrequency modulation in-process is offered. Modem optimization is carried out on the basis of synthesis of optimum finite signals in the individual channels not calling the intersymbol distortions and ensuring maximum value of a signal/noise ratio on entries of matched filters of the demodulator. The estimation of parameters of the modem for the purpose of smoothing of performances of the is frequency-limited communication channel is carried out on the basis of a method of an optimum recurrent filtering. The analysis of effectiveness and a noise stability of the modem is given theoretical.

Keywords: system a data transmission, the intellectual modem, a multifrequency method of modulation, optimum finite signals, effectiveness, a noise stability.