Timing Offset Estimation Methods Using Training Symbol in OFDM Systems

摘要

In the OFDM system according to the present invention, a time offset estimation method using training symbols generates OFDM symbols according to the three techniques through a simulation for estimating the time offset for technique 1, technique 2, and technique 3. Steps; Transmitting the OFDM symbol on an ISI multipath channel; Compute a time measure value of the three techniques, calculate a mean square error (MSE) value representing a difference between a predetermined set time offset value and a time offset value estimated through each technique, Calculating an average of the techniques; In order to select the optimal technique, the values of the time measures of the techniques are compared, and the mean square error (MSE) value representing the difference from the time offset value estimated by each technique using the set time offset value, and each technique By comparing the average value of the two methods to compare the time offset estimation accuracy of each technique to determine the optimal technique.