Patent Document ID: 20060233270
Application ID: 11303484
Patent Flag: 0

Claim One:
1. A method for uplink carrier frequency synchronization and antenna weight vector estimation in an Orthogonal Frequency Division Multiple Access (OFDMA) system having a smart antenna, the method comprising the steps of: a) receiving and storing training symbols in the time domain transmitted to estimate an antenna weight vector during a training symbol transmission interval; b) estimating carrier frequency offsets using training symbols in the frequency domain that are obtained by performing a Fast Fourier Transformation (FFT) algorithm with respect to the training symbols received during the training symbol transmission interval; c) compensating the stored training symbols in the time domain based on the estimated carrier frequency offsets; and d) estimating an antenna weight vector using training symbols in the frequency domain that are obtained by applying an FFT algorithm with respect to the training symbols in the time domain derived by compensating the carrier frequency offsets during the training symbol transmission interval.