Enhanced time synchronization in IEEE 802.11a system using SIGNAL field and MAP channel estimation

Author

Nguyen, C.L. ; Mokraoui, Anissa ; Duhamel, Pierre ; Nguyen Linh-Trung

Author_Institution

L2TI, Univ. Paris 13, Villetaneuse, France

fYear

2012

fDate

10-12 Oct. 2012

Firstpage

46

Lastpage

49

Abstract

This paper addresses the problem of time synchronization in the IEEE 802.11a OFDM wireless communication system.In addition to the reference sequence usually used in conventional algorithms, recently the SIGNAL field of the physical packet has been exploited to improve the coarse time synchronization. To increase the performance of the fine time synchronization, we propose to use joint time synchronization and channel estimation based on the Maximum A Posteriori Probability criterion. Simulation results show that the probability of synchronization failure of the proposed synchronization algorithm is reduced as compared to existing methods.

Keywords

channel estimation; maximum likelihood estimation; probability; synchronisation; wireless LAN; IEEE 802.11a system; MAP channel estimation; OFDM wireless communication system; SIGNAL field; maximum a posteriori probability criterion; time synchronization; Bit error rate; Frequency modulation; Frequency synchronization; Large scale integration; Radio access networks; Time frequency analysis; Wireless communication; IEEE 802.11a; MAP; OFDM; SIGNAL field; channel estimation; time synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Technologies for Communications (ATC), 2012 International Conference on

Conference_Location

Hanoi

ISSN

2162-1020

Print_ISBN

978-1-4673-4351-0

Type

conf

DOI

10.1109/ATC.2012.6404226

Filename

6404226