a receiver

Abstract

The invention provides a receiver, comprising: a crystal oscillator, a phase-locked loop, a radio frequency module, an analog baseband processing module, an adjustment module and a digital baseband processing module; the crystal oscillator respectively outputs the phase-locked loop and the analog baseband processing module as a reference the first clock signal of the clock; the phase-locked loop adjusts the frequency adjustment coefficient according to the rate deviation, processes the first clock signal according to the adjusted frequency adjustment coefficient, and obtains the second clock signal as the reference clock of the digital baseband processing module; the radio frequency module, which demodulates the wireless signal to obtain the original analog baseband signal; the analog baseband processing module processes the original analog baseband signal to obtain the first digital baseband signal; the digital baseband processing module, when demodulating the first digital baseband signal, detects the The obtained rate deviation is sent to the phase-locked loop; the adjustment module adjusts the first digital baseband signal, so that the adjusted first digital baseband signal is consistent with the set reference signal rate.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a receiver. Background technique [0002] Temperature Compensated Crystal Oscillator (Temperature Compensated Crystal Oscillator, TCXO) as a reference oscillator can provide a clock source for receivers or transmitters in mobile terminals, base stations and other equipment. The transmitter and receiver in the device mainly include: radio frequency module (RadioFrequency, RF), analog baseband processing module (AnalogBaseBand, ABB) and digital baseband processing module (DigitalBaseband, DBB). When the receiver in the mobile terminal receives the wireless signal sent by the base station, the RF in the receiver converts the wireless signal into the original analog baseband signal and sends it to ABB. ABB performs analog-to-digital conversion on the original analog baseband signal to obtain a digital baseband signal for transmission. To the DBB, the DBB demodulates an...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a receiver, which is used to solve the problem of affecting the receiving performance of other receivers connected to the crystal oscillator when the receiver in the prior art adjusts the crystal oscillator according to the frequency deviation

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