Energy-Efficient Relay Assignment and Power Control in Multi-User and Multi-Relay Networks

A. Zappone (1) , S. Atapattu (2) , M. Di Renzo (1, 1) , J. Evans (2) , M. Debbah (1)

1 L2S - Laboratoire des signaux et systèmes
2 University of Melbourne

We consider a multi-user, multi-relay network where each source communicates with its destination via an assigned relay. To ensure fairness among the users, the minimum of the users’ energy efficiencies (in bit-per-Joule) is jointly maximized with respect to the relay assignment and transmit power of both source and relay nodes. The resulting algorithm is provably convergent, requires limited complexity, and significantly outperforms the baseline scenario in which no joint optimization of transmit powers and relay assignment is performed.

Mots clés: Index Terms-Energy efficiency; multi-user networks; multi- relay networks; relay assignment; power optimization

Domaines: Réseaux et télécommunications [cs.NI]

A. Zappone, S. Atapattu, M. Di Renzo, J. Evans, M. Debbah. Energy-Efficient Relay Assignment and Power Control in Multi-User and Multi-Relay Networks. IEEE Wireless Communications Letters, 2018, pp.1 - 1. ⟨10.1109/LWC.2018.2860013⟩. ⟨hal-01880309⟩