METHOD OF TRANSMISSION OF DISCRETE MESSAGE AND SYSTEM FOR ITS REALIZATION Russian patent published in 2002 - IPC

FIELD: communication, transmission of information both over wire communication channels and over channels employing electromagnetic waves. SUBSTANCE: system transmitting discrete messages includes coder, modulator, transmitter, receiver, demodulator, decoder. Coder incorporates first pulse former, storage of codes of operations of additional matrix, pulse generator with repetition frequency fn/k, first doubter of pulse repetition frequency, first ring counter up to k, first group of m calculators of test element, first key, ring counter up to (2k+1), first AND gate, first unit of on-line storage, m calculators of function g², first flip-flop, second unit of on-line storage, first ring counter to n. Decoder includes second pulse former, storage of codes of operations of test matrix of operations, pulse generator with repetition frequency fk/(k+1), second doubler of pulse repetition frequency, second ring counter to n, second group of m calculators of test element, second key, ring counter to [(2(k+1)+1], second AND gate, third unit of on-line storage, unit making decision on decoding, unit making decision on correction of error, error calculator, second AND gate, first OR gate, (m+1)-th calculator of function g², second flip-flop, fourth on-line storage, third key, second ring counter to k, adder of elements of Abelian group. Calculator incorporates fourth key, decoder, sixth key, calculator of function g¹, second OR gate, accumulating adder of elements of Abelian group, fifth key. EFFECT: simplified approach to realization of system thanks to exclusion of multiplication and division operations from process of coding and decoding. 10 cl, 5 dwg