COMBINING DECODED-AND-FORWARDED SIGNALS IN GAUSSIAN COOPERATIVE CHANNELS

Brice Djeumou (1) , Samson Lasaulce (1) , Andrew G. Klein (2)

1 L2S - Laboratoire des signaux et systèmes
2 ECE WPI - ECE - Worcester Polytechnic Institute

The goal of this paper is to investigate different ways of combining signals that have been decoded- nd-forwarded by a bunch of relays. We more deeply look at the case where the relays are in bad reception conditions and the cooperation powers are sufficiently high. In this situation using a conventional MRC severely degrades the receiver performance especially when the number of relays increases. On the other hand the MMSE- and ML-based combiners can almost always extract from their partners some performance improvements.

Mots clés: Relay channel; Cooperation; Decode-and-forward; MRC; MMSE; ML

Domaines: Théorie de l'information et codage [math.IT]

Brice Djeumou, Samson Lasaulce, Andrew G. Klein. COMBINING DECODED-AND-FORWARDED SIGNALS IN GAUSSIAN COOPERATIVE CHANNELS. IEEE International Symposium on Signal Processing and Information Technology (ISSPIT'06), Aug 2006, Vancouver, Canada. pp 622 - 627, ⟨10.1109/ISSPIT.2006.270875⟩. ⟨hal-00361707⟩