Title :
Rate-Optimized Constellation Rearrangement for the Relay Channel
Author :
Khormuji, Majid N. ; Larsson, Erik G.
Author_Institution :
Sch. of Electr. Eng., R. Inst. of Technol., Stockholm
fDate :
9/1/2008 12:00:00 AM
Abstract :
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.
Keywords :
telecommunication channels; forwarding strategy; rate-optimized constellation rearrangement; relay channel; signal constellation remapping; Additive noise; Constellation diagram; Councils; Digital relays; Frequency; Gaussian noise; Helium; Performance gain; Signal processing; Virtual reality; Relay channel; constellation mapping; detectand-forward; instantaneous relaying;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2008.080898