FIELD: multichannel addressed communication systems using single frequency band, easy access to communication channel, and code separation of subscribers. SUBSTANCE: method is characterized in that type of output useful signal approaches δ- function along time axis and coincides in shape with autocorrelation function of composite input signal and output responses to other system's signals coincide with mutual correlation functions of these signals, are orthogonal and either have no side lobes, or their quantity is minimal due to appropriate processing of set of composite signals being used each of them composed of basic and additional sequences encoded by respective L-codes. Each transmitting station independently functions to convert analog message into sequence of alternating-sign bits, to shape basic and additional L-code based code sequences within bit function time around N samples shaped, to assign respective subcarrier to each sample; each sample is subjected to interdigital modulation obeying first or second frequency variation law; modes shaped in first and second frequency bands are radiated, all radiated modes are received, filtered out, and standardized; each sample is compressed, basic and additional L-code based code sequences are compressed, results of compression basic and additional L-code based code sequence are summed up, alternating-sign pulse sequence is shaped, and analog message transmitted is recovered. EFFECT: enhanced noise immunity of system, enlarged number of simultaneously operating subscribers without mutual interference. 3 dwg, 4 tbl
