A Timing Synchronization of OFDMA-TDD Systems over Multipath Fading Channels

Abstract

In this paper, we propose a preamble structure and present a coarse timing synchronization method based on it. Performance of the proposed synchronization method is compared to Schmidl's method in terms of detection, missing, false alarm probability and mean acquisition time. For frequency selective multipath fading channels, our proposed synchronization method has a higher detection probability and a lower false alarm probability than Schmidl's method at high SNRs (greater than 1 dB). The mean acquisition time of the proposed method is also improved at high SNRs