Rate-Optimized Constellation Rearrangement for the Relay Channel

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 propose...

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Veröffentlicht in:	IEEE communications letters 2008-09, Vol.12 (9), p.618-620
Hauptverfasser:	Khormuji, M.N., Larsson, E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Additive noise Amplification Applied sciences Channels Constellation diagram constellation mapping Constellations Councils detect-and-forward detectand- forward Digital relays Electrical engineering, electronics and photonics Elektroteknik, elektronik och fotonik Exact sciences and technology Frequency Gaussian noise instantaneous relaying Performance gain Relay Relay channel Signal processing Strategy Systems, networks and services of telecommunications TECHNOLOGY TEKNIKVETENSKAP Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) Virtual reality
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Beschreibung
Zusammenfassung:	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.
ISSN:	1089-7798 1558-2558 1558-2558
DOI:	10.1109/LCOMM.2008.080898