Mobile terminal and signal processing method, baseband chip and radio frequency chip of the mobile terminal

Abstract

The invention discloses a mobile terminal and a signal processing method, a baseband chip and a radio frequency chip of the mobile terminal. The mobile terminal comprises the baseband chip and the radio frequency chip. In the radio frequency chip, radio frequency modules of all communication modes share oscillator signals generated by a crystal oscillator. In the baseband chip, sampling modules corresponding to the radio frequency modules are used for sampling obtained output signals, so that sampling signals are obtained, and according to the frequency shift between the output signals and corresponding base station signals, compensation modules are used for conducting phase compensation on respective sampling signals to obtain communication signals, so that frequency synchronism of all the communication signals and corresponding base station signals is realized. The mobile terminal and the signal processing method, the baseband chip and the radio frequency chip of the mobile terminal reduce the cost and the power consumption of the radio frequency chip in the multi-mode mobile terminal and the cost and the power consumption of the baseband chip in the multi-mode mobile terminal, and eliminate the complex clock switching process.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobile terminal, a signal processing method thereof, a baseband chip, and a radio frequency chip. Background technique [0002] The radio frequency chip and the baseband chip are important components of the mobile terminal. The mobile terminal sends and receives data and signals through the radio frequency chip, and processes the received or to-be-sent data and signal through the baseband chip. Such as figure 1 What is shown is a structural schematic diagram of a radio frequency chip and a baseband chip of an existing single radio frequency mobile terminal. refer to figure 1 , the radio frequency chip 11 includes: a crystal oscillator 111 , a frequency synthesizer 112 , a mixer 113 , a low-pass filter 114 and an antenna 115 . The baseband chip 12 includes: a communication module 121 and a common module 122 . Wherein, the communication module 121 includes a firs...

AI Technical Summary

Problems solved by technology

[0010] The problem solved by the present invention is to reduce the cost and power consumption of the radio frequency chip and the baseband chip in the multi-mode mobile terminal, and also avoid the complicated clock switching process

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