NONCOHERENT DATA TRANSFER BY USING ORTHOGONAL NOISE SIGNALS

Abstract

The modern period of communications development is associated with the search and use of new broadband noise-like signals. One of the pressing problems in this area – large-power ensembles synthesis of broadband noise-like signals with good correlation and group properties. Another problem is the difficulty of isolating components from a mixture of several broadband noise-like signals under noise conditions, as well as the difficulty of reproducing such signals during correlation reception shape. The article discusses an incoherent correlation method of data transmission, based on the use of signals generated on the transmitter side by some noise generator. The noise signal is divided into parts (noise pulses) of a given duration. When the current noise pulse is transmitted, the next noise pulse is orthogonalized or collinearized depending on the transmitted data bit. On the receiver side, the mutual energy of the current and previous noise pulse is calculated. If this energy is less than the threshold, a decision is made to transmit zero, otherwise, to transmit one. Synchronization of the receiver and transmitter is carried out by changing the sign of the mutual energy of adjacent noise pulses.