APPARATUS AND METHOD FOR REDUCING HARMONIC INTERFERENCE TO GPS SIGNAL RECEPTION
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United States of America Patent
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Jan 6, 2016
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Jan 6, 2016
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The present invention provides an apparatus and method for reducing harmonic interference to GPS signal reception. The apparatus comprises a RF transceiver module, a GPS signal reception path, and a harmonic distortion predictor. The RF transceiver module generates a first signal to be transmitted. The harmonic distortion predictor is used for establishing an estimated harmonic distortion sample based on the first signal. The GPS signal reception path receives an analog GPS signal, and converts the analog GPS signal into a digital GPS signal. The digital GPS signal subtracts the estimated harmonic distortion sample to obtain an accurate digital GPS signal. Thereby, the harmonic interference may be eliminated from the GPS signal in digital domain by means of digitally form so as to reduce distortion of the GPS signal.
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