Distributed Power Allocation Strategy in Shallow Water Acoustic Interference Channels

Antony Pottier (1, 2) , François-Xavier Socheleau (1, 2) , Christophe Laot (1, 2)

1 Lab-STICC_TB_CACS_COM
2 SC - Département Signal et Communications

Due to the absence of spectrum regulation and limited bandwidth, underwater acoustic (UA) systems are prone to interfere with each other. To limit this interference, a decentralized power allocation strategy is proposed for multiple OFDM UA links sharing the same physical resource. These links are supposed to be noncooperative and aim at selfishly maximizing their own information rate. Each link is assumed to only know the statistics of its channel and the overall noise plus interference power spectral density. A game-theoretic formulation, which explicitly takes into account the random time-varying nature of the underwater acoustic channel as well as the low speed of sound, is derived. Numerical simulations show the strong benefit of the proposed approach in highly interfering channels.

Domaines: Acoustique [physics.class-ph]; Traitement du signal et de l'image [eess.SP]

Antony Pottier, François-Xavier Socheleau, Christophe Laot. Distributed Power Allocation Strategy in Shallow Water Acoustic Interference Channels. SPAWC 2016 : IEEE 17th International Workshop on Signal Processing advances in Wireless Communications, Jul 2016, Edinburgh, United Kingdom. pp.1 - 5, ⟨10.1109/SPAWC.2016.7536793⟩. ⟨hal-01369655⟩