Effect of imperfect noise estimation in timing synchronization

This paper calculates the performance of an orthogonal frequency division multiplexing (OFDM) system confronted with Rayleigh fading channels in terms of sync detection probability. We adopted a timing synchronization scheme employing simple repeated constant amplitude zero auto-correlation (CAZAC) training symbol with relevant correlation techniques, and analyzed the effect of imperfect noise estimation. Some probability expressions of OFDM timing synchronization for system measurement are evaluated.