Patent Document ID: 7675989
Application ID: 11303484
Patent Flag: 1

Claim One:
1. A computer-readable medium used in association with a computing device which includes a processor and a memory, the computer readable medium including computer instructions which are configured to cause the computing device to perform 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: receiving and storing training symbols in the time domain transmitted to estimate an antenna weight vector during a training symbol transmission interval, wherein the estimated antenna weight vector is generated during the training symbol transmission interval of the received training symbols; 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; compensating the stored training symbols in the time domain based on the estimated carrier frequency offsets; and estimating the 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, wherein the estimating carrier frequency offsets are provided to the compensating training symbols in the time domain prior to the estimating the antenna weight vector and during the training symbol transmission interval.