PREAMBLE DETECTION APPARATUS FOR EFFICIENTLY DETECTING PREAMBLE IN A SITUATION IN WHICH THE DISTORTION OF A SIGNAL INCREASES

摘要

PURPOSE: A preamble detection apparatus for efficiently detecting preamble is provided to obtain antenna diversity effect which uses a signal of an antenna. ;CONSTITUTION: A plurality of antennas(111~113) receives an OFDM(Orthogonal Frequency Division Multiplexing) signal. A plurality of OFDM demodulation units(121~123) FFT(Fast Fourier Transform)about each OFDM signal. A CIR(Channel Impulse Response) generator(130) generates a channel impulse response. A combining unit(140) combines each channel impulse response signal. A Doppler shift canceller(150) removes Doppler shift in a combined CIR signal. The Doppler shift canceller generates a power delay profile for preamble detection.;COPYRIGHT KIPO 2011