The defense of PhD thesis of Mahdi Ezzaouia will be held on November 8th at 10:00 at IMT Atlantique, Rennes Campus , Petit Amphi. The thesis is entitled “Opportunistic resource allocation in multi-cell wireless networks”. It was made in the framework of a “co-tutelle” with Ecole Nationale d’Ingénieurs de Tunis (ENIT), Tunisia.