Abstract—In this paper, a reference time synchronization method [1] is adopted with introduced changed and improved fine and refined time estimation step. The communication system on which it is tested is MIMO OFDM based wireless local area network system. The WLAN standard adopted is of IEEE 802.11n, each data packet starts with a preamble, which consists of short as well as long training symbols. Simulation is implemented with C++ eclipse and tested for AWGN, Exponential Rayleigh Decaying and TGN fading channels. The plots generated by the simulation clearly show the improved performance of the introduced scheme.

Index Terms—IEEE 802.11n, MIMO, OFDM, time synchronization, WIFI, WLAN.

A. Ali is research officer at Wireless Systems Lab KICS-University of Engineering and Technology, Lahore Pakistan. (e-mail: anum.ali@live.com).
W. Mahmood is the director of Al-Khawarizmi Institute of Computer Science (KICS) of University of Engineering and Technology, Lahore Pakistan. (e-mail: Director@kics.edu.pk).
I. Javed is with the Electrical Engineering Department, University of Engineering and Technology, Lahore Pakistan. (e-mail: imran.javed@kics.edu.pk).
I. Ur Rehman is Assistant Manager at Wireless Systems Lab KICS-University of Engineering and Technology, Lahore Pakistan. (e-mail: ibaad@kics.edu.pk).

Cite:A. Ali, W. Mahmood, I. Javed, and I. Ur Rehman, "IEEE802.11n Time Synchronization for MIMO OFDM WLAN," International Journal of Computer and Communication Engineering vol. 2, no. 5, pp. 576-579, 2013.