Method, system and device for RF synchronous transmitting broadcast television signal

Abstract

The invention discloses a method, a system and a device for RF synchronous transmitting broadcast television signal which are used for solving problems that noise accumulation forms poor signal in process of the present technique RF signal transmitting, and the system must depend on global locating system time source for synchronizing. The method includes steps as follows: a broadcast television transmitting center equipment generates a synchronous guide frequency signal; the broadcast television base belt signal is modulated for generating RF signal; the broadcast television transmitting center equipment processes digital process to the RF signal for obtaining a digital signal according with a transmitting standard, the digital signal and the synchronous guide frequency signal are sent to each base station; the base station reverts RF signal after synchronous storage process to the digital signal according with the synchronous guide frequency signal, amplify the RF signal and transmits the user terminal.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method, system and device for radio frequency synchronous transmission of broadcast television signals. Background technique [0002] At present, when the terrestrial wireless broadcasting and TV signal system is synchronously networking with multi-transmitting base stations at the same frequency, the broadcasting and TV transmission center modulates the broadcasting and TV baseband signals to generate modulated radio frequency signals, and passes these modulated radio frequency signals through microwave or optical transceivers It is transmitted to each base station, and then each base station synchronously processes and amplifies the received modulated radio frequency signal and then transmits it. [0003] Such as figure 1 The transmission network structure of radio and television signals is shown. The radio and television transmission center modulates the radio and te...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method, system and device for radio frequency synchronous transmission of radio and television signals, which are used to solve the signal degradation caused by noise accumulation in the radio frequency signal transmission process in the prior art, and the problem that the system must rely on the GPS clock source for synchronization

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