How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR
© Charlotte Hucher et al. 2008
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.
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