Method and device for demodulating a signal
AssigneeXiaomi Inc.
InventorsXiangdong Wang, Zhenghai Wu, Feng Guo
Life of this patent
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Abstract
A method for demodulating a signal is provided. The method includes: acquiring a reference clock signal provided by a power management unit (PMU) in a mobile terminal; determining a moving velocity of the mobile terminal; determining, based on the moving velocity, a Doppler frequency shift value generated when the mobile terminal receives a radio frequency (RF) signal transmitted by a base station; and demodulating, according to the reference clock signal and the Doppler frequency shift value, the received RF signal.
Claims16
A method for demodulating a signal, comprising:
- acquiring a reference clock signal provided by a power management unit (PMU) in a mobile terminal;
- determining a moving velocity of the mobile terminal;
- determining, based on the moving velocity, a Doppler frequency shift value generated when the mobile terminal receives a radio frequency (RF) signal transmitted by a base station;
- and
- demodulating, according to the reference clock signal and the Doppler frequency shift value, the received RF signal.
A device for demodulating a signal, comprising:
- an acquiring unit configured to acquire a reference clock signal provided by a power management unit (PMU) in a mobile terminal;
- a determining unit configured to determine a moving velocity of the mobile terminal, and determine, based on the moving velocity, a Doppler frequency shift value generated when the mobile terminal receives a RF signal transmitted by a base station;
- and
- a demodulating unit configured to demodulate, according to the reference clock signal and the Doppler frequency shift value, the received RF signal.
A device for demodulating a signal, comprising:
- a power management unit (PMU) configured to provide a reference clock signal;
- a clock acquisition (CA) module coupled to the PMU, the CA module configured to:
- determine a moving velocity of a mobile terminal;
- determine, based on the moving velocity, a Doppler frequency shift value generated when the mobile terminal receives a RF signal transmitted by abuse station;
- and
- determine, according to the Doppler frequency shift value and the reference clock signal, a demodulation clock signal;
- and
- a receiver coupled to the CA module, and configured to acquire the RF signal and the demodulation clock signal, and demodulate the RF signal according to the demodulation clock signal.
A device for demodulating a signal, comprising:
- a power management unit (PMU) configured to provide a reference clock signal;
- a receiver configured to determine a moving velocity of a mobile terminal;
- and
- a processing unit configured to determine, according to the moving velocity, a Doppler frequency shift value generated when the mobile terminal receives a radio frequency (RF) signal transmitted by a base station, wherein:
- the receiver is coupled to the PMU and the processing unit, and the receiver is configured to acquire the RF signal, the reference clock signal, and the Doppler frequency shift value, and demodulate, according to the reference clock signal and the Doppler frequency shift value, the RF signal.
Dependencies are inferred from the claim text.