Error probability bounds for decode‐and‐forward relaying with two correlated sources

Stefan Schwandter (1) , Haifa Fares Jridi (2, 3) , Alexandre Graell I Amat (4, 3) , Gerald Matz (1)

1 Institute for Telecommunications, Vienna University of Technology (Vienna University)
2 ELEC - Département Electronique
3 Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (UMR 3192)
4 Department of Signals and Systems (Chalmers University of Technology)

We derive bounds on the error probability of optimal and sub-optimal detectors in an uncoded decode-and-forward relay system with two correlated information sources. This setup is relevant to wireless sensor networks where nearby sensors collect spatially correlated data. We show that taking into account the source correlation at the relay and at the destination leads to significant performance gains. Simulation results corroborate the tightness of our analytical bounds.

Mots clés: Relay network; Correlated sources; Maximum a posteriori; Wireless sensor networks

Domaines: Electronique; Traitement du signal et de l'image [eess.SP]

Stefan Schwandter, Haifa Fares Jridi, Alexandre Graell I Amat, Gerald Matz. Error probability bounds for decode‐and‐forward relaying with two correlated sources. IEEE  Global  Communications  Conference, Dec 2011, Houston, United States. ⟨10.1109/GLOCOM.2011.6133984⟩. ⟨hal-00725495⟩