FIELD: radio communication. SUBSTANCE: method and device are intended to form orthogonally coded communication signals for subscribers of communication system with use of orthogonal functions for each orthogonal communication channel. Symbols of digital data are M-fold modulated with use of at least two orthogonal modulation symbols with length n which as a rule are Walsh functions traditionally employed in communication system. These symbols are provided by selector of modulation symbols usually comprised of one or several code generators. Modulation in this case is such that M is equal to product of common number of orthogonal functions and number used to form individual modulation symbols. Each group of loq2M coded symbols of data composed of data processing elements is converted to one modulation symbol with the aid of element selecting modulation symbol in correspondence with their binary values. In some variants of implementation of method and device there is used Hadomard fast transform device for conversion of symbols. Generated communication signals are demodulated by way of their parallel correlation with number of orthogonal functions chosen in advance and by demodulation of results with generation of M values of energy presenting each orthogonal modulation symbol. These values of energy are converted to data metrics of energy by means of process of formation of double maximum metrics. Correlation and demodulation can be conducted with the use of at least two groups of N correlators, N being number of employed functions, and feed of correlated signals to one demodulator per each group of correlators. Each demodulator generates M values of energy presenting each of M mutually orthogonal modulation symbols which are then integrated into collection of M values of energy. In other configurations coherent demodulators can be used to obtain values of amplitude for received signals which then are collated with results of double maximum metrics to produce values of aggregate metrics of data symbols. EFFECT: increased energy for evaluation and tracking of phase of communication signals, preservation of orthogonality between communication channels by means of non-coherent modulation/demodulation. 44 cl, 9 dwg
