Single chirp data alignment for chirp spread spectrum

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United States of America Patent

PATENT NO 11736142
SERIAL NO

17567003

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Importance

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Abstract

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Data acquisition in a chirp spread spectrum (CSS) signal may use a data alignment indicator of a single down chirp signal or single upchirp signal. A receiver may receive part or all of a preamble comprising a sequence of training chirps for symbol alignment followed by a single opposite chirp for data alignment. Training chirps may be processed through a fast-Fourier transform (FFT), and the values from the FFT may be accumulated. The accumulated values may exceed a threshold for detection. The receiver may align, based on the received chirps of the preamble and exceeding the threshold, its symbol reception. Using this symbol alignment, the receiver may await a single opposite chirp after the sequence of training chirps. The single opposite chirp may indicate data alignment. Upon receipt of the opposite chirp, the receiver may start data acquisition based on chirps following the single opposite chirp.

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Patent Owner(s)

  • SURE-FI, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hall, David R Provo, US 1284 19644
Hall, Mark Smithfield, US 159 3864
Robinson, John Spanish Fork, US 113 1732
Willes, Warren Alpine, US 6 15

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