Paper Info
Title
Hybrid analog-digital coding for nonuniform memoryless sources
Abstract
In this paper, we propose a hybrid analog-digital scheme for the transmission of non-uniform memoryless sources over Additive White Gaussian Noise (AWGN) channels. The hybrid scheme is constructed by generating most of the output symbols from standard linear combinations of the input bits, as in Rate Compatible Modulation (RCM), and a few of them using a Low Density Generator Matrix (LDGM) code. The basic idea is that the RCM scheme corrects most of errors, leaving residual errors to be corrected by the LDGM code. Source non-uniformity is exploited at the decoder and the encoder is optimized depending on the source non-uniformity to further improve the system performance.
Year
DOI
Venue
2015
10.1109/CISS.2015.7086861
CISS
Keywords
Field
DocType
rate compatible modulation,nonuniform sources,random projections,parallel concatenation,ldgm codes,decoder,bit error rate,codecs,decoding,encoding,turbo codes,encoder,generators,linear combinations
Residual,Low density generator matrix,Linear combination,Mathematical optimization,Computer science,Algorithm,Communication channel,Digital coding,Modulation,Theoretical computer science,Encoder,Additive white Gaussian noise
Conference
Citations 
PageRank 
References 
1
0.36
15
Authors
2
Name
Order
Citations
PageRank
Lu Li120.72
Javier Garcia-Frias271669.63