Paper Info
Title
Low and high-delay source-channel coding with bandwidth expansion and correlated interference
Abstract
We consider the problem of sending a Gaussian source over an additive white Gaussian noise channel with Gaussian correlated interference known to the transmitter. We study both low-delay and asymptotically high-delay (in the sense of infinite source and coding block lengths) joint source-channel coding schemes based on purely analog and hybrid-digital analog (HDA) schemes with bandwidth expansion, respectively. The achievable (square error) distortion region of these schemes under matched and mismatched noise power is analyzed. The low-delay scheme uses a non-parametric analog mapping that is designed using a joint optimization of the encoder and the decoder. Numerical results show that the non-parametric approach adapts better to the interference than the classical linear scheme. For the high-delay regime, we establish a lower bound on the system's distortion and propose a layered HDA scheme based on Wyner-Ziv and HDA Costa coding. The proposed HDA scheme is shown to perform close to the derived bound and to be resilient under noise mismatch.
Year
DOI
Venue
2013
10.1109/CWIT.2013.6621593
Information Theory
Keywords
Field
DocType
awgn channels,channel coding,codecs,distortion,source coding,transmitters,gaussian correlated interference,gaussian source,hda costa coding,wyner-ziv coding,additive white gaussian noise channel,bandwidth expansion,coding block lengths,decoder,distortion region,encoder,high-delay source-channel coding,hybrid-digital analog schemes,infinite source,joint source-channel coding schemes,linear scheme,low-delay source-channel coding,matched noise power,mismatched noise power,nonparametric analog mapping,nonparametric approach,square error,transmitter,interference,encoding,bandwidth,decoding
Bandwidth expansion,Computer science,Upper and lower bounds,Interference (wave propagation),Artificial intelligence,Distortion,Variable-length code,Computer vision,Topology,Noise power,Shannon–Hartley theorem,Speech recognition,Gaussian
Conference
Citations 
PageRank 
References 
0
0.34
12
Authors
3
Name
Order
Citations
PageRank
Ahmad Abou Saleh1203.95
W.-Y. Chan211418.25
Fady Alajaji331941.92