Communication method and reception apparatus

摘要

An electronic device that digitizes a baseband signal obtained from a received high-frequency signal; specifies a position of a preamble included in the digitalized signal; calculates a square of the preamble; specifies a peak from a value obtained by the square of the preamble; performs a fast Fourier transform (FFT) on the baseband signal using a position of the peak as a start of an FFT window; extracts phases of a plurality of frequency components for phase measurement from the baseband signal which has been subjected to the FFT; obtains a phase difference of the plurality of phases; and obtains a phase correction value of a reception signal using the phase difference and a phase reference.

主权项

1. An electronic device comprising:
a first antenna configured to receive a first high-frequency signal; a second antenna configured to receive a second high-frequency signal: and circuitry configured to: generate a first digitized baseband signal from the first high-frequency signal; generate a second digitized baseband signal from the second high-frequencv signal; specify a position of a preamble included in the first digitalized baseband signal; calculate a square signal of an autocorrelation of the preamble; specify a peak value obtained by the square signal of the autocorrelation of the preamble; perform a fast Fourier transform (FFT) on the first digitized baseband signal using a position of the peak value as a start of an FFT window; extract a plurality of phases of a plurality of frequency components for phase measurement from the first digitized baseband signal which has been subjected to the FFT; obtain a phase difference of the plurality of phases; determine a relative delay between the first high-frequency signal and the second high-frequency signal based on the phase difference and a phase reference; and demodulate the first digitized baseband signal and the second digitized baseband signal based on the relative delay.