METHOD OD ADAPTIVE PACKET RADIO COMMUNICATION WITH TIME-DIVISION MULTIPLEX Russian patent published in 1997 - IPC

FIELD: radio communication, design of noise-immune systems. SUBSTANCE: time schedule of operation of communication system realizes in agreement with proposed method conversion of continuous flow of signals of message into packets of signals alternating with time intervals for analysis of noise and realization of transmission-reception of feedback commands, time intervals for retuning of radio station to frequencies and time intervals of synchronization of radio line. In absence of noise radio communication is carried out by packets of narrow-band signals on fixed frequency under synchronous mode. With emergence of slowly changing noise radio line operates under mode of frequency adaptation retuning to frequency having minimal level of noise. With emergence of noise changing fast and correlated by duration and time in addition to slowly changing noise program retuning of working frequency is conducted. In case of appearance of uncorrelated random fast changing noise apart from correlated fast changing noise duplication of transmitted packets of messages is performed on other frequencies in addition to program retuning of working frequency. EFFECT: high noise immunity of radio channels in presence of both random and deliberately organized noise, adaptation of packet transmission method - frequency adaptation, program retuning of working frequency, frequency-time duplication to noisy reception conditions within allocated frequency band, rational usage of allocated frequencies for radio communication. 2 dwg