SU856034A1 - Device for correlation reception of phase-manipulated signals - Google Patents

Description

I

The invention relates to telecommunications and can be used in the transmission and reception of impulse information. .

A device for the correlation reception of phase-shifted signaling switches is known, containing in each channel a first multiplier connected in series, an integrator, a second multiplier and a third multiplier, the output of which is connected to the corresponding input of a common adder, the output of which is connected to the input of the decoder, and also in each channel the fourth connected multiplier, filter, Oloking-generator and trigger, while the outputs of the reference signal generator are connected to the first input of the first multiplier o channel and the input of the phase shifter, the output of which is connected to the first input of the first multiplier of another channel, the second input of which is connected to

the second input of the first multiplier of one channel D.

However, using this device, it is not possible to receive phase-shifted signals with partially suppressed sideband.

The purpose of the invention is to provide reception of signals with a partly suppressed sideband.

Claims (1)

The goal is achieved by the fact that the series-connected amplifier-limiter and signal analyzer whose output is connected to the second trigger of one channel, whose output is connected to the second input of the second multiplier, whose output is connected to the first input of the fourth multiplier whose second input is connected to the output of the amplifier-limiter and the PJepvom input of the fourth multiplier of another channel, to the second input of which is connected to stroke .vtorogo multiplier, a second input coupled to an output latch, the total output of the adder to -drdklyuchen vhodu.usilitel -ogranichitel and to the second input of the third multiplier connected to the output filter in each channel, respectively. The drawing shows a structural electrical circuit of the proposed device. The device contains in each channel and 2, respectively, the first, second, third and fourth multipliers Zi4, 5i6, 7i8, 9i0, integrators 11 and 12, filters 13 and 14 blocking generators 15 and 16, triggers 1.7 and 18, In addition, the device soder; (it is a common adder 19, a decoder 20, a reference signal generator 21, a phase shifter 22, a limiter amplifier 23, and a signal analyzer 24. The device works as follows. A phase-shifted signal with an hour, a frequency suppressed sideband (SSB) CC1STIT of two signals: - an in-phase envelope that carries useful information, and Q, (t) is an envelope of the quadrature component that interferes with reception. Component Cl (t) undergoes changes in channels 1 and 2 than with signal c two sidebands DBP. At the exit about the total adder component R (t) and the quadrature component Q (t) are compensated. At the output of the fourth multipliers 9 and 10, voltage proportional to the module of the cosine and sine of the phase mutual ramp angle is formed at any signal k with two sidebands, and so with one. This is evident from the fact that at the corners of the mutual misalignment of phases close to 0, 90, 160, 27 °, the interference at the outputs of the fourth multipliers 9 and 10 is uncorrelated. The introduction of the limiting amplifier 23 stabilizes the signal intensity at the output of the common adder 19. In steady state, the device operates stably. However, at times of power up 5 or interruptions, communication may occur,. that the triggers 17 and 18 turn out to be in a non-consistent state, which leads to recovery at the output of the device not the synphasic component of the signal, but the quadrature, i.e. false work is done. To correct the situation, the analyzer 24 is inserted, which puts the triggers 17 and 18 in a consistent state. The proposed device allows receiving phase-shifted signals with both DBP and SSB, the latter are promising in discrete information transmission systems with povyshennyh speeds. Device for correlating reception of phase-shifted signals, containing in each channel serially connected first multiplier, integrator, second multiplier and third multiplier, the output of which is connected to the corresponding input of the common adder, the output of which is connected to the input of the decoder, and also serially connected in each channel the fourth multiplier, filter, blocking generator and trigger, while the outputs of the reference signal generator are connected to the first input of the first AC The receiver of one channel and the input of the phase shifter, the output of which is connected to the first input of the first multiplier of another channel, the second input of which is connected to the second input of the first multiplier of one channel, characterized in that serially connected amplifier-limiter and signal analyzer, the output of which is connected to the second input of the trigger of one channel, the output of which is connected to the second input of the second multiplier, the output of which is n It is connected to the first input of the fourth multiplier, the second input of which is connected to the output of the limiting amplifier and the first input of the fourth multiplier of another channel, to the second input of which the output of the second multiplier is connected, the second input of which is connected to the trigger output, and the output of the common adder is connected to the amplifier input - Ograii58560346 Chitel, and to the second input the third-Sources of information, The multiplier is connected to the output of the 1st in consideration when examining the filter in each channel, respectively 1. USSR certificate of certification. W 434612, cl. H 04 L 27/18, 1972.