On the balance between cooperation and interference in dense wireless networks

ANDRES ALTIERI; LEONARDO REY VEGA; PABLO PIANTANIDA; CECILIA GALARZA

París

Conferencia; International Symposium on Wireless Communication Systems; 2012

IEEE

This paper explores the balance between cooperation through relay nodes and aggregated interference generation in large decentralized wireless networks using decode-and-forward. The source nodes in the network are modeled using a marked Poisson process. We consider the case in which only a single randomly located relay is added to one source in the network and study the outage probability gains obtained. Then, using a simple model, we study the case in which all sources can potentially use their nearest neighbor from the set of inactive nodes as relays, leading to a mixed transmission scheme in which some users employ decode-and-forward and others employ direct transmission. Comparing both scenarios we draw conclusions regarding how each of the effects (cooperation and interference generation) contribute to the observed performance. We derive closed-form approximations to the upper bounds on the error probability, averaging over all node positions and fading gains realizations, to support our claims.