Title :
A universal lattice code decoder for fading channels
Author :
Viterbo, Emanuele ; Boutros, Joseph
Author_Institution :
AT&T Shannon Lab., Florham Park, NJ, USA
fDate :
7/1/1999 12:00:00 AM
Abstract :
We present a maximum-likelihood decoding algorithm for an arbitrary lattice code when used over an independent fading channel with perfect channel state information at the receiver. The decoder is based on a bounded distance search among the lattice points falling inside a sphere centered at the received point. By judicious choice of the decoding radius we show that this decoder can be practically used to decode lattice codes of dimension up to 32 in a fading environment
Keywords :
combined source-channel coding; fading channels; lattice theory; maximum likelihood decoding; search problems; arbitrary lattice code; bounded distance search; channel state information; decoding radius; fading channels; lattice points; maximum-likelihood decoding algorithm; received point; receiver; universal lattice code decoder; Constellation diagram; Costs; Decoding; Entropy; Fading; Frequency; Histograms; Lattices; Modems; Multidimensional systems;
Journal_Title :
Information Theory, IEEE Transactions on
