Imperial College London
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ProfessorDenizGunduz

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor in Information Processing
 
 
 
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Contact

 

+44 (0)20 7594 6218d.gunduz Website

 
 
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Assistant

 

Ms Joan O'Brien +44 (0)20 7594 6316

 
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Location

 

1016Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Murin:2017:10.1109/TIT.2017.2678988,
author = {Murin, Y and Kaspi, Y and Dabora, R and Gunduz, D},
doi = {10.1109/TIT.2017.2678988},
journal = {IEEE Transactions on Information Theory},
pages = {2737--2772},
title = {Finite-length linear schemes for joint source-channel coding over Gaussian broadcast channels with feedback},
url = {http://dx.doi.org/10.1109/TIT.2017.2678988},
volume = {63},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We  study  linear  encoding  for  a  pair  of  correlatedGaussian sources transmitted over a two-user Gaussian broadcastchannel  in  the  presence  of  unit-delay  noiseless  feedback,  abbre-viated as the GBCF. Each pair of source samples is transmittedusing a linear transmission scheme in afinitenumber of channeluses. We investigate three linear transmission schemes: A schemebased  on  the  Ozarow-Leung  (OL)  code,  a  scheme  based  onthe  linear  quadratic  Gaussian  (LQG)  code  of  Ardestanizadehet al., and a novel scheme derived in this work using a dynamicprogramming  (DP)  approach.  For  the  OL  and  LQG  schemeswe  present  lower  and  upper  bounds  on  the  minimal  number  ofchannel uses needed to achieve a target mean-square error (MSE)pair. For the LQG scheme in the symmetric setting, we identifythe  optimal  scaling  of  the  sources,  which  results  in  a  significantimprovement of its finite horizon performance, and, in addition,characterize the (exact) minimal number of channel uses requiredto  achieve  a  target  MSE.  Finally,  for  the  symmetric  setting,  weshow  that  for  any  fixed  and  finite  number  of  channel  uses,  theDP  scheme  achieves  an  MSE  lower  than  the  MSE  achieved  byeither  the  LQG  or  the  OL  schemes.
AU  - Murin,Y
AU  - Kaspi,Y
AU  - Dabora,R
AU  - Gunduz,D
DO  - 10.1109/TIT.2017.2678988
EP  - 2772
PY  - 2017///
SN  - 0018-9448
SP  - 2737
TI  - Finite-length linear schemes for joint source-channel coding over Gaussian broadcast channels with feedback
T2  - IEEE Transactions on Information Theory
UR  - http://dx.doi.org/10.1109/TIT.2017.2678988
UR  - http://hdl.handle.net/10044/1/44813
VL  - 63
ER  -
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