APPARATUS FOR CONTROLLING DATA TRANSMISSION CHANNEL QUALITY Russian patent published in 2014 - IPC G06F17/00 

FIELD: information technology.

SUBSTANCE: apparatus comprises a modem consisting of a demodulator and a modulator, a mutual difference coefficient measuring device consisting of two multipliers, a phase changer, two integrators, two squaring devices, an adder, a gating unit and a normalising unit, a group of AND elements, an OR element, a NOR element, a flip-flop, a register, a unit for measuring the signal energy to noise spectral density ratio, a mutual difference coefficient threshold measuring device consisting of an AND element, a doubler, a squaring device, a logarithm device, a divider, a comparator, a control result output unit, a group of delay lines, an analogue-to-digital converter, a controlled delay line, a switch, and further includes an OR element, two AND elements, an RS flip-flop, a comparator, two devices for calculating mathematical expectation consisting of two OR elements, two inverters, a register, two shift registers, a group of AND elements, a group of adders, a counter and a divider.

EFFECT: high reliability of controlling communication link quality of a data transmission channel and end transmission equipment.

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