Imperial College London
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ProfessorBrunoClerckx

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Wireless Communications and Signal Processing
 
 
 
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Contact

 

+44 (0)20 7594 6234b.clerckx Website

 
 
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Location

 

816Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Clerckx:2017:10.1109/TCOMM.2016.2647699,
author = {Clerckx, B and Hao, C},
doi = {10.1109/TCOMM.2016.2647699},
journal = {IEEE Transactions on Communications},
pages = {2164--2179},
title = {MISO networks with imperfect CSIT: a topological rate-splitting approach},
url = {http://dx.doi.org/10.1109/TCOMM.2016.2647699},
volume = {65},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Recently,  the  Degrees-of-Freedom  (DoF)  region  ofmultiple-input-single-output   (MISO)   networks   with   imperfectchannel  state  information  at  the  transmitter  (CSIT)  has  at-tracted   significant   attention.   An   achievable   scheme,   knownas  Rate-Splitting  (RS),  integrates  common-message-multicastingand  private-message-unicasting.  In  this  paper,  focusing  on  thegeneralK-cell MISO IC with an arbitrary CSIT quality of eachinterfering  link,  we  firstly  identify  the  DoF  region  achieved  byRS. Secondly, we introduce a novel scheme, so called TopologicalRS  (TRS),  whose  novelties  compared  to  RS  lie  in  a  multi-layerstructure  and  in  transmitting  multiple  common  messages  to  bedecoded  by  groups  of  users  rather  than  all  users.  The  designof  TRS  is  motivated  by  a  novel  interpretation  of  theK-cell  ICwith  imperfect  CSIT  as  a  weighted  sum  of  a  series  of  partiallyconnected  networks.  We  show  that  the  DoF  region  achievedby  TRS  yields  the  best  known  result  so  far,  and  we  find  themaximal  sum  DoF  via  hypergraph  fractional  packing.  Lastly,for  a  realistic  scenario  where  each  user  is  connected  to  threedominant transmitters, we identify the sufficient condition whereTRS  strictly  outperforms  conventional  schemes,  and  show  thatTRS  is  optimal  for  some  CSIT  qualities.
AU  - Clerckx,B
AU  - Hao,C
DO  - 10.1109/TCOMM.2016.2647699
EP  - 2179
PY  - 2017///
SN  - 1558-0857
SP  - 2164
TI  - MISO networks with imperfect CSIT: a topological rate-splitting approach
T2  - IEEE Transactions on Communications
UR  - http://dx.doi.org/10.1109/TCOMM.2016.2647699
UR  - http://hdl.handle.net/10044/1/43579
VL  - 65
ER  -
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