A FREQUENCY OFFSET ESTIMATING METHODD USING REPEATED TRAINING SYMBOLS IN OFDM SYSTEM

摘要

PURPOSE: A frequency offset estimation method using repeated training symbol in an OFDM system is provided to offer a proper standard of use by determining a frequency estimation technique corresponding to the situation. CONSTITUTION: An OFDM symbol regarding the simulation for estimating the frequency offset. The generated OFDM symbol is transmitted in AWGN(additive white Gaussian noise) environment or Rayleigh channel. The OFDM symbol is received. The frequency offset of the received OFDM symbol is estimated using each frequency offset estimation technique. The mean square error(MSE) of the estimated frequency offset is obtained. The obtained MSE using the frequency offset estimation method is compared with the signal to noise ratio. According to the compared results, the optimal frequency offset technique is decided. [Reference numerals] (AA) Generating an OFDM symbol; (BB) Transmission; (CC) Setting normalization frequency offset; (DD) Comparing accuracy and selecting an optimal technique