Distributed power control over interference channels using ACK/NACK feedback

Riccardo Andreotti (1) , Leonardo Marchetti (1) , Luca Sanguinetti (2, 1) , Mérouane Debbah (2)

1 University of Pisa - Università di Pisa
2 Chaire Radio Flexible - Chaire Radio Flexible Alcatel-Lucent/Supélec

In this work, we consider a network composed of several single-antenna transmitter-receiver pairs in which each pair aims at selfishly minimizing the power required to achieve a given signal-to-interference-plus-noise ratio. This is obtained modeling the transmitter-receiver pairs as rational agents that engage in a non-cooperative game. Capitalizing on the well-known results on the existence and structure of the generalized Nash equilibrium (GNE) point of the underlying game, a low complexity, iterative and distributed algorithm is derived to let each terminal reach the GNE using only a limited feedback in the form of link-layer acknowledgements (ACK) or negative acknowledgements (NACK). Numerical results are used to prove that the proposed solution is able to achieve convergence in a scalable and adaptive manner under different operating conditions.

Domaines: Mathématiques [math]; Informatique [cs]; Sciences de l'ingénieur [physics]

Riccardo Andreotti, Leonardo Marchetti, Luca Sanguinetti, Mérouane Debbah. Distributed power control over interference channels using ACK/NACK feedback. 2014 IEEE Global Communications Conference (Globecom), Dec 2014, Austin, United States. ⟨10.1109/glocom.2014.7037464⟩. ⟨hal-01098840⟩