Séminaire ICI : Paul Ferrand
Titre du séminaire et orateur
Frequency-space interference alignment in downlink cellular networks.
Paul Ferrand, INRIA Lyon.
Date et lieu
Mardi 15 juillet 2014, 14h30.
ENSEA, Cergy-Pontoise, salle 384.
Cellular networks have been notoriously interference-limited systems in dense urban areas, where base stations are deployed in close proximity to one-another. Recently, a signal processing method called Interference Alignment has emerged, making use of the increasing signal dimensions available in the system through multiple-input multiple output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) technologies. In this talk, I will provide some characterizations of the interference distributions in cellular networks and expected gains of interference cancellations in terms of SINR. I will then describe a distributed interference alignment scheme requiring no coordination between the base stations and fully exploiting all the space and frequency dimensions available for transmission. I compare the performance of this scheme with adaptations of existing distributed resource allocation schemes adapted for large space and frequency dimensions, and propose a number of perspectives in this research direction.