Exploiting the pilot pattern orthogonality of ofdma signals for the estimation of base stations number of antennas

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

In a recent work, we proposed a GLR test dedicated to the identification of OFDM systems. In the present paper, we show that the proposed technique can be extended for the estimation of the number of antennas used by a base station. This extension is made possible thanks to the orthogonality property that exhibit the pilot pattern associated to the different antennas. Thanks to a multihypothesis testing we show that the number of transmitting antennas is estimated using only one antenna at the receiver and without any knowledge of the pilot sequence.

Mots clés: Cognitive radio

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

Mohamed Rabie Oularbi, Saeed Gazor, Abdeldjalil Aissa El Bey, Sébastien Houcke. Exploiting the pilot pattern orthogonality of ofdma signals for the estimation of base stations number of antennas. WOSSPA 2013 : The 8th International Workshop on Systems, Signal Processing and their Applications, May 2013, Mazafran, Algiers, Algeria. pp.416 - 421. ⟨hal-00829937⟩