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 a method and apparatus for frequency offset estimation in a DBO-CSS system, a DBO-CSS receiver and a computer readable storage medium using the same.;In the method for estimating a frequency offset in a differential bi-orthogonal-chirp spread spectrum (DBO-CSS) system according to the present invention, a fractional part of the frequency offset is estimated by using a preamble. A fractional fraction estimating step; A matched filtering step of matched filtering to find each output vector at the ends of the subchirps making up a full chirp; Obtaining a phase difference of the subfolders by the phase of the output vectors obtained in the matched filtering step; And an integer part estimating step of estimating an integer part of the frequency offset by the phase difference of the sublaps and the time interval of the sublaps.