Joint symbol timing and channel estimation for OFDM based WLANs

The orthogonal frequency-division multiplexing access technique has recentl y been attracting considerable interest especially for wireless local area networks (WLAN's). In this letter, we consider the joint estimation of the symbol timing, the channel length and the channel-impulse response. A novel estimation algorithm based on maximum-likelihood principles and the genera lized Akaike information criterion is proposed. We provide simulation resul ts to illustrate the performance of our proposed algorithm.