START-STOP COMMUNICATION SYSTEM Russian patent published in 2010 - IPC H04L25/38 

FIELD: radio engineering.

SUBSTANCE: start-stop communicaton system comprises the following components on transmitting side - source of information (1), unit of signals generation (2), which includes shift register (3), coding device (4), conversion device (5), multiplexor (6), phase manipulator (7), the first clock pulse generator (8), generator of pseudorandom sequence (9) and key (10), also the first mixer (11), the first frequency synthesiser (14), generator of intermediate frequency (13), transmitter (12), communication line (50), on receiving side - receiver (15), the second mixer (16), controlled amplifier (17), two low-pass filters (LPF) (19), (21), two multipliers (18), (20), phase changer (22), the second generator of intermediate frequency (IFG) (47), the second frequency synthesiser (48), the third clock pulse generator (CPG) (49); unit of signal processing (23), which includes two analog-digital converters (ADC) (24), (31), four non-linear elements (NE) (25), (32), (34), (40), three summators (26),(35),(43), the third LPF (27), logarithmic cascade (28), integrating link (29), digital-analog converter (DAC) (30), two video stores (33), (39), two multipliers (42), (46), synchronising unit (36), the second clock pulse generator (37), solving device (44), decoding device (38), two delay lines (41), (45).

EFFECT: improved noise immunity of pseudorandom and information signals reception, possibility to detect error with availability of noise and provision of signals reception with quite a high level.

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