Пристрій для прийому сигналів IP телебачення з використанням технології CDMA

Abstract

A device for receiving IPTV signals using CDMA has antenna switch, band-pass filter, a demultiplexer, the first output is connected to the sound decoder, the output of which is connected with the input interface unit, and the second output of the demultiplexer is connected to the video decoder, the output of which is connected with input of information display devices, the control microcontroller, code converter and the adder. It is provided with a buffer amplifier, the input of which is connected with a band-pass filter, to the input of which is connected to the antenna switch, and the output of the buffer amplifier is connected with the mixer, the output of which is connected with the intermediate frequency amplifier that is connected with a unit for distribution of signal components, the first output of which is connected with the unit of the in-phase component, and the second output is connected with the unit for the quadrature component, the correction unit, FSK demodulator, the output of which is connected with the decoder a digital stream, a demultiplexer, the first output of which is connected with the sound decoder, the output of which is connected with the interface unit, and the second output of the demultiplexer is connected with the video decoder, the output of which is connected with a device for reproducing information, subscriber identification unit, the output of which is connected with the control microcontroller, the first output of which is connected with the display device information, and the second output is connected with the code converter, the output of which is connected with the modulator, to the second input of which is connected to a Gaussian filter, which is connected to the input of the FSK modulator, the output of the modulator is connected with the input of the adder, the output of which is connected with the mixer, to the second input of which is connected to the frequency synthesizer, the output of the mixer is connected with the input of the power amplifier, the output of which is connected with the input of the band-pass filter, which is connected with the input of the antenna of the key.