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Mathematical models of the signals peculiar to communications using the autocorrelation reception of the shift-keyed noise signals are suggested in the present paper. System performance is investigated and the particularities of the bit error probability dependence upon the normalized signal-to-noise ratio and the bandwidth-delay product are revealed. The definition of the optimal value of the signal-to-noise ratio upon power is substantiated and the relevant values are calculated. The performed comparative analysis proved that the communication using the differential noise shift-keying, within which total time delay diversity is applied between the reference and the data signals, possesses the best system performance among the communications considered in this paper.

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r0JlOBaXa A. M., Ka3MMMpeHKO B. f i . M3C YAH Hi7 np. 50-nemu~ O K~R~P R , 2-6,

The results of development of the transceiver for 130-134 GHz band digital radio relay system are provided. The transceiver power amounted to 10 dBm, the receiver sensitivity was of about 10-11 W. Under the conditions of QАМ-256 modulation the bit rate of 150 Мbps has been attained within the IF bandwidth of 25 MHz.

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