Method and apparatus for frequency offset estimating in DBO-CSS system, and DBO-CSS receiver and computer-readable storage medium using thereof

摘要

The present invention relates to using the same as a frequency offset estimation method and apparatus of the DBO-CSS system receiver and DBO-CSS computer program. ; The present invention in accordance with DBO-CSS (Differential Bi Orthogonal-Chirp Spread Spectrum) system in the frequency offset (frequency offset) the estimation method, the preamble (preamble) for use by the frequency offset of the decimal part (fractional part) the estimated fractional portion of estimation step; Matched filtering step at the end of the sub-mole (subchirp) forming the pulcheop (full chirp) to the matched filter (matched filtering) to obtain a respective output vectors; Obtaining a phase difference (phase difference) of the sub-phases of the output vector by the adhesive preparation obtained from the matched filtering step; And an integer portion estimating step of estimating the integer part (integer part) of the frequency offset by a time interval of the phase difference and the adhesive preparation of the sub-sub-Mole.