Patent ID: 7881418

Claim:
A device for detecting a communication frame base point through blind processing, comprising: an extraction circuit for extracting self correlation processing signals from a digital communication signal having a signal frame for synchronization by using a pair of correlation processing windows of a variable size; a correlation unit for performing self correlation processing to the self correlation processing signals extracted; a matching unit for performing pattern matching processing between a correlation-processed signal, obtained through the self correlation processing, and a reference signal; a computation unit for estimating a base point of the signal frame and an offset of the digital communication signal with respect to the base point, based on distance information of the pattern matching processing; and an inversion unit for performing data inversion processing to correlated data, self-correlation-processed by the correlation unit, to thereby expose a factor identifying a pattern length of a signal pattern, wherein the computation unit has a function of estimating the pattern length based on the factor exposed.