METHOD OF INFORMATION TRANSMISSION IN RADIO LINE WITH PSEUDORANDOM RE-TUNING OF OPERATING FREQUENCIES AND DEVICE FOR ITS REALIZATION Russian patent published in 1997 - IPC

FIELD: radio communication, in particular, transmission of information by signals with a pseudorandom re-tuning of operating frequency. SUBSTANCE: the method consists in the fact that pulse bursts are formed from the information signal that are modulated at the respective frequencies and radiated into space. The modulation frequency is selected proceeding from a better noise situation at frequencies preset by K pseudorandom sequence generators, which is equivalent to a space-diversity reception with a frequency diversity. Reception is effected in all K channels. The conclusion in which channel transmission was performed is drawn on the basis of the analysis of the address of the received pulse burst. The device realizing the method represents a transceiver with a pseudorandom re-turning of operating frequency, as well as specially introduced devices: the first and second pseudorandom sequence generators with outputs of the current and subsequent clock cycles, second receiver for reception of the second pseudorandom sequence, two receivers for monitoring the blocking of the subsequent frequency channel, blocking comparator and a switch determining the number of sequence for transmission of the next information burst according to the results of comparison. EFFECT: enhanced truth of information transmission in radio networks with a pseudorandom re-tuning of operating frequency and reduced number of the required frequency channels for organization of communication. 2 cl, 6 dwg