Method and system for eliminating carrier frequency offset of reference period signal based on Bluetooth fixed frequency expansion
A technology of carrier frequency offset and signal expansion, which is applied in the direction of modulation carrier system, transmission system, carrier adjustment, etc., can solve the problems of sampling data phase offset, angle estimation deviation of incoming wave direction, etc., and achieve the elimination of sampling data phase error, The effect of improving the accuracy of angle estimation and improving the degree of restoration
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[0030] The present invention provides a carrier frequency offset elimination method based on the Bluetooth fixed-frequency extended reference period signal, which establishes a synchronous connection between the Bluetooth receiver with the receiving antenna array and the Bluetooth transmitter, and calculates and receives the fixed-frequency extended reference period in the Bluetooth signal packet The difference between the phase difference between the signal sampling points and the theoretical phase difference adds compensation to the sampling data, eliminating the phase error caused by the carrier frequency offset caused by the out-of-synchronization of the receiver and transmitter crystal oscillators during the synchronization process. The present invention will be described in detail below according to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. It should be understood that the specific embodime...
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