| 摘要 |
FIELD: radio communications, possible use in demodulators of radio-relay communication systems which use signals with quadrature amplitude manipulation. ^ SUBSTANCE: in accordance to the invention, error signal is generated every time when on two adjacent clock intervals change of modulating symbol value occurs, not only when sign change occurs. Device contains serially connected solving device (1), adder (4), second input of which is connected to output of solving device (1) through serially connected sign inverter (3) and first delay block (2), and multiplier (6), and also second delay block (5), connected to second input of device. Introduced are serially connected second adder (7), first input of which is connected to output of delay block (2), second input - to output of sign inverter (3), divider by two (8), and third adder (9), second input of which is connected to output of delay block (5), and its output - to second input of multiplier (6). Solving device (1) makes a decision about value of modulating symbol being receipt, and not about its sign. ^ EFFECT: increased interference resistance of device. ^ 2 cl, 15 dwg, 1 tbl |
