INTERFERENCE-PROTECTED COMMUNICATION SYSTEM Russian patent published in 2006 - IPC H04B15/00 

FIELD: radio engineering, possible use for transferring discontinuous information under conditions of radio-electronic counteractions.

SUBSTANCE: in accordance to invention, fast adjustment of working frequency is additionally introduced. Each information symbol of original duration is serially transferred at each frequency from net of frequencies for fast adjustment of working frequency. Preservation of original spectrum width of signal at each frequency position is achieved by combining information symbols in blocks with simultaneous increase of their duration. Preservation of transfer speed is achieved by parallel transfer of information symbols of block at all frequencies of frequencies net for fast adjustment. As a result of exclusion of frequency positions, affected by narrowband interference, only a part of information symbol is lost. Losses are compensated due to coherent accumulation of parts of information symbol from different frequency positions.

EFFECT: increased interference resistance of communication system with slow pseudo-random adjustment of working frequency.

20 dwg