A method of determining a carrier frequency offset between a transmitter and a receiver
A carrier frequency offset, carrier frequency technology, applied in the modulation carrier system, digital transmission system, electrical components and other directions, can solve the problem of being affected by the phase winding effect
Inactive Publication Date: 2010-03-31
AGENCY FOR SCI TECH & RES
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[0010] However, all of the above conventional methods have disadvantages
For example, with the first conventional method, this method suffers from phase-wrapping effects when large packets of data are sent
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[0029] Usually, it is not possible to use the same clock crystal oscillator in the transmitter and receiver, which is the root cause of why there is a carrier frequency offset between the transmitter and receiver.
[0030] Additionally, the frequency offset between the clock crystal oscillators in the transmitter and receiver can be adjusted based on the processing involved. For example, if the frequency of the signal generated from the clock crystal oscillator is higher than the oscillation frequency of the clock crystal oscillator, the frequency offset between the signal generated in the transmitter and in the receiver will be higher than in the transmitter and in the receiver The frequency offset between the clock crystal oscillators in the
[0031] Also, where sampling is used, it can be observed that the frequency offset between the clock crystal oscillators in the transmitter and receiver is also reflected in the sampling frequency offset between the transmitter and rece...
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A method of determining a first carrier frequency offset between a transmitter and a receiver for a first frequency band and a second carrier frequency offset between the transmitter and the receiverfor a second frequency band is provided. The method provided includes determining an estimate of the first carrier frequency offset, determining an estimate of the second carrier frequency offset, determining an estimate of a first sampling interval offset between the transmitter and the receiver for the first frequency band based on the determined estimate of the first carrier frequency offset, and determining an estimate of a second sampling interval offset between the transmitter and the receiver for the second frequency band based on the determined estimate of the second carrier frequencyoffset. The method provided further includes determining an averaged sampling interval offset based on the calculation of an average of the determined estimate of the first sampling interval offset and the determined estimate of the second sampling interval offset, and determining the first carrier frequency offset and the second carrier frequency offset based on the determined averaged sampling interval offset.
Description
[0001] This application claims priority from US Provisional Application 60 / 883,645 (filed January 5, 2007), the entire contents of which are incorporated herein by reference. technical field [0002] Embodiments of the present invention relate to the field of wireless communications. For example, embodiments of the invention relate to a method of determining a first carrier frequency offset for a first frequency band between a transmitter and a receiver and a second carrier frequency offset for a second frequency band between the transmitter and receiver, compensating the transmitter Method of offsetting a first carrier frequency of a first frequency band between a receiver and a second carrier frequency of a second frequency band between a transmitter and a receiver, and compensating for a sampling interval offset between the transmitter and receiver , a method for a first frequency offset of a first frequency band between a transmitter and a receiver, and a second carrier fr...
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IPC IPC(8): H04J11/00
CPCH04L27/2676H04L27/2657
Inventor 彭晓明方剑文陈保善
Owner AGENCY FOR SCI TECH & RES