ITERATIVE RECEIVER AND METHOD FOR FREQUENCY OFFSET ESTIMATION IN CODED OFDM SYSTEM

摘要

A frequency offset estimation method for estimating the frequency offset using the expected values of the data subcarriers in orthogonal coding frequency division multiplexing to increase the speed and accuracy of the estimation and efficiently using the frequency band, and an iterative receiver for frequency offset estimation. Iterative receiver is proposed.;A frequency offset estimation method in an orthogonal coded frequency division multiplexing communication system of the present invention comprises the steps of: (a) setting an initial value of a frequency offset estimate and a channel estimate; And (b) obtaining a soft-decidion value of the bits that have undergone the decoding process, and using this to obtain an expected value of the data symbol, and using the expected value to update the frequency offset estimate and / or the channel estimate. It characterized in that it comprises the step of performing at least one iteration iteration (iteration) process.;COFDM, frequency offset, Intercarrier interference, iterative receiver