Skip to content


Open Access

How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR

  • Charlotte Hucher1Email author,
  • Ghaya Rekaya-Ben Othman1 and
  • Jean-Claude Belfiore1
EURASIP Journal on Advances in Signal Processing20072008:243153

Received: 1 June 2007

Accepted: 27 August 2007

Published: 6 September 2007


We propose some new adaptive amplify-and-forward (AF) and decode-and-forward (DF) protocols using a selection. The new selection criterion is a function of the instantaneous capacities of all possible transmission schemes (with or without cooperation). Outage probabilities and simulation results show that the adaptive cooperation protocols solve the problem of bad performance of cooperation protocols at low SNR. Moreover, they improve the asymptotic performance of their corresponding AF and DF protocols.


Information TechnologySelection CriterionQuantum InformationOutage ProbabilityFull Article

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

Ecole Nationale Superieure des Telecommunications, Paris Cedex 13, France


© Charlotte Hucher et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.