Symbol timing error detector using channel profile of Digital receiver and symbol timing error detecting method thereof

摘要

A symbol timing error detector and a method of detecting the symbol timing error that uses a channel profile of a digital receiver. The symbol timing error detector includes a non-coherent correlator to calculate a non-coherent correlation value using pseudo noise (PN) sequence in which a received signal is that is divided into a predetermined number of units to calculate a channel profile, a block buffer to window and store a predetermined portion of the channel profile, a profile comparison unit to compare the channel profile stored in the block buffer with a current channel profile output from the non-coherent correlator using pattern matching, and a symbol timing estimator to detect a symbol index difference determined using the pattern matching of the current channel profile and the stored channel profile as a symbol timing drift. Accordingly, the timing error may be corrected regardless of a carrier frequency offset that results from an effect of a channel environment.