METHOD FOR BLIND CHANNEL ESTIMATION UTILIZING GUARD INTERVAL IN OFDM SYSTEM

摘要

A method for estimating a blind channel using a guard interval of a signal in an OFDM system is provided to improve the efficiency of a lost frequency band through a pilot. A method for estimating a blind channel using a guard interval of a signal in an OFDM system includes the steps of: generating an i-th symbol block having N carriers; forming an OFDM symbol block by performing IFFT(Inverse Fast Fourier Transform) for the i-th symbol block; adding a guard interval sample to a front part of the i-th symbol block, and forming at least one OFDM symbol block; and modeling the formed OFDM symbol into a channel limitation impulse response filter and a noise, and estimating the channel impulse response as a signal which is received through the channel.