Carrier frequency offset error elimination method and system based on specific antenna array switching sequence
A carrier frequency offset, antenna array technology, applied in the modulation carrier system, transmission system, carrier adjustment and other directions, can solve the problem of sampling data phase deviation, synchronization error, reduce the accuracy of angle estimation, etc., to eliminate the sampling data phase error Effect
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[0030] The present invention will be described in detail below with reference 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 embodiments described here are only used to explain the present invention and are not intended to limit the present invention.
[0031] like figure 1 As shown, the receiver antenna array includes 9 patch antennas, in which antenna 9 is set as the reference antenna, and antennas 1 to 8 are array antennas that form a uniform circular array clockwise on the same plane with the reference antenna as the center. Radius is half carrier wavelength:
[0032]
[0033] The receiver of the present invention switches antennas time-divisionally to sample Bluetooth fixed frequency extension signals according to a predetermined sequence, and the single activation time of each antenna is 4 μs, in which the switching and sampling time respectively...
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