A METHOD FOR ANALYSING OFDM FREQUENCY OFFSET ESTIMATION ACCURACY USING A REPEATED TRAINING SYMBOL

摘要

PURPOSE: A method for analyzing an OFDM frequency offset estimation accuracy using a repeated training symbol is provided to select a proper method according to the situation of a system by analyzing the use results of three different methods. CONSTITUTION: An OFDM symbol is generated for a simulation to estimate a frequency offset. The generated OFDM symbol is transmitted from an AWGN(Additive White Gaussian Noise) environment or rayleight fading channel environment. A normalized frequency offset is set. The frequency offset estimation accuracy of each method through a mean square error is compared to select the optimum method. The OFDM symbol has a sample interval of 0.2 us, 1024 sub carriers, and 40 samples of a protection section.