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Rate-Optimized Constellation Rearrangement for the Relay Channel

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2 Author(s)
Khormuji, M.N. ; Sch. of Electr. Eng., R. Inst. of Technol., Stockholm ; Larsson, E.G.

We study the instantaneous relay channel where the relay's output only depends on the current received signal at the relay. We propose a novel forwarding strategy for this class of relay channels which can outperform amplify-and-forward, detect- and-forward and estimate-and-forward. The proposed scheme is based on a remapping of the signal constellation at the relay.

Published in:

Communications Letters, IEEE  (Volume:12 ,  Issue: 9 )