Method and device for adjusting frequency synchronization, and communication receiver

Abstract

The invention is suitable for the communication field, and provides a method and a device for adjusting frequency synchronization, and a communication receiver. The method comprises the following steps: estimating frequency deviation of UE (user equipment) and a base station, so as to generate estimation frequency deviation; generating temperature compensation frequency according to the current temperature information; generating a residual frequency deviation value according to the estimation frequency deviation and the temperature compensation frequency; setting a frequency deviation adjustment distribution coefficient; calculating to generate a base band frequency deviation adjustment value and a frequency deviation adjustment value of radio frequency according to the frequency deviation adjustment distribution coefficient and the residual frequency deviation value; and carrying out frequency adjustment on the radio frequency (XO, PLL) and a base band according to the frequency deviation adjustment value of the radio frequency and the base band frequency deviation adjustment value, so as to realize synchronization. With the adoption of the method and the device for adjusting the frequency synchronization, and the communication receiver, when the XO adjustment precision and an update period are limited, the frequency adjustment is commonly carried out by adopting the base band and the radio frequency; and the temperature compensation is carried out, so that carrier synchronization, sample value synchronization, symbol synchronization are effectively and accurately realized, the signal quality of the receiver is guaranteed, the crystal oscillator cost is lowered, and the application range is enlarged.

Description

technical field [0001] The invention belongs to the field of communications, and in particular relates to a frequency synchronization adjustment method, device and communication receiver. Background technique [0002] In a mobile communication system, synchronization plays a very important role, and the quality of synchronization performance can directly affect the quality of signal reception. Synchronization in the current system is mainly aimed at symbol synchronization, carrier frequency synchronization and sample value synchronization. [0003] At present, synchronization is usually achieved in the following ways: [0004] 1. Configure an adjustable and controllable crystal oscillator (XO, Crystal Oscillator) in the mobile terminal receiver, such as a voltage-controlled temperature-compensated crystal oscillator (VCTCXO), and complete symbol synchronization, carrier frequency synchronization and sample value synchronization by adjusting the frequency of the crystal osci...

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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a frequency synchronization adjustment method, wh

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