METHOD OF OPTIMIZATION OF THE RADIO TELEPHONY
 

V. G. Sannikov

Moscow Technical University of Communications and Informatics

 

The paper is received on November 14, 2014

 

Abstract. In digital system of a radio telephony with magnifying of bit rate a principal cause of decrease of its noise immunity is the intersymbol interference. Methods of optimisation of reception are applied to boosting of noise immunity of system in modern modems, enough complex in implementation on the basis of the reception as a whole in the core. In paper the new method of synthesis of optimum finite signals in the transmitting modem, in essence not calling an intersymbol interference on a communication channel output, and leading to simple optimum element reception is offered. The theorem of existence of optimum signals, finite both on an entry, and on an output of a linear communication channel is proved. Formulas of calculation of a noise stability of radio-telephone system are given exact, in comparison with known parities, at a data transmission with the quadrature amplitude modulation on communication channels with an intersymbol interference.

Keywords: radio telephony system, a data transmission, intersymbol interference, optimum finite signals, the modem, a noise immunity.