OFDM system identification using pilot tone signature

Mohamed Rabie Oularbi (1, 2) , Saeed Gazor (3) , Sébastien Houcke (4, 1) , Abdeldjalil Aissa El Bey (4, 1)

1 SC - Département Signal et Communications
2 Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (UMR 3192)
3 ECE - Department of Electrical and Computer Engineering - Faculty od Engineering and Applied Science (Queen's university - Kingston, Canada)
4 Lab-STICC_TB_CACS_COM

This paper deals with the challenge of OFDM system identification. In a recent paper, we developed a Generalized Likelihood Ratio Test approach that exploits only the pilot positions to detect the presence of a given system. In this paper, we propose to exploit the redundancy often induced between the pilot symbols as a side information to improve the detector performance. Computer simulations show that the proposed algorithm outperforms the first proposed method and the existing techniques in the literature. More than system detection, the proposed algorithm performs channel estimation as well as estimation of the noise variance and is computationally inexpensive.

Domaines: Traitement du signal et de l'image [eess.SP]

Mohamed Rabie Oularbi, Saeed Gazor, Sébastien Houcke, Abdeldjalil Aissa El Bey. OFDM system identification using pilot tone signature. The 7th International Workshop on Systems, Signal Processing and their Applications, May 2011, Tipaza, Algeria. ⟨hal-00609305⟩