Title :
Partner selection in cooperative networks: Efficiency vs fairness in Ricean fading channels
Author :
Castiglione, P. ; Savazzi, Stefano ; Nicoli, Monica ; Matz, G.
Author_Institution :
Telecommun. Res. Center Vienna (FTW), Vienna, Austria
Abstract :
Enabling collaboration among users to relay messages for others is crucial to efficiently assign network resources and maximize network goodput. However, in some cases subsets of users would prefer a selfish behavior (by refusing cooperation) to protect their own performance. Depending on the application and on the particular propagation environment, an efficient grouping algorithm that assigns partners at MAC layer should conveniently address the problem of maximizing the network goodput without penalizing the performances of single users. This can be done by including specific constraints (user-fairness) that pose limitations on the amount of resources, e.g. energy, that might be reserved for relaying information of partners. In this paper the partner selection algorithms are designed to maximize the network lifetime while guaranteeing user-fair assignments. We analyze the network lifetime gain that can be achieved in a realistic network where fading significantly differs from Rayleigh and propose a novel low-complexity partner selection algorithm that maximizes the energy efficiency of the network while guaranteeing the given fairness constraint for each user.
Keywords :
Rician channels; communication complexity; resource allocation; MAC layer; Ricean fading channels; cooperative networks; fairness constraint; low-complexity partner selection algorithm; network lifetime; network resources; user-fair assignments; Algorithm design and analysis; Collaboration; Communication system control; Fading; Process control; Relays; Signal processing algorithms; Statistics; Telecommunication control; Wireless sensor networks; Cooperative diversity; amplify and forward; grouping algorithms; network lifetime; user-fairness;
Conference_Titel :
Communications, Control and Signal Processing (ISCCSP), 2010 4th International Symposium on
Conference_Location :
Limassol
Print_ISBN :
978-1-4244-6285-8
DOI :
10.1109/ISCCSP.2010.5463430