Interference, cooperation and connectivity - A degrees of freedom perspective

Chenwei Wang; Syed A. Jafar; Shlomo Shamai; Michele Wigger

doi:10.1109/ISIT.2011.6034162

Interference, cooperation and connectivity - A degrees of freedom perspective

Chenwei Wang
, Syed A. Jafar
, Shlomo Shamai
, Michele Wigger

University of California
Technion - Israel Institute of Technology

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collection › Contribution à une conférence › Revue par des pairs

9 Citations (Scopus)

Résumé

We explore the interplay between interference, cooperation and connectivity in heterogeneous wireless interference networks. Specifically, we consider a 4-user locally-connected interference network with pairwise clustered decoding and show that its degrees of freedom (DoF) are bounded above by 12/5. Interestingly, when compared to the corresponding fully connected setting which is known to have 8/3 DoF, the locally connected network is only missing interference-carrying links, but still has lower DoF, i.e., eliminating these interference-carrying links reduces the DoF. The 12/5 DoF outer bound is obtained through a novel approach that translates insights from interference alignment over linear vector spaces into corresponding sub-modularity relationships between entropy functions.

langue originale	Anglais
titre	2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
Editeur	Institute of Electrical and Electronics Engineers Inc.
Pages	430-434
Nombre de pages	5
ISBN (imprimé)	9781457705953
Les DOIs	https://doi.org/10.1109/ISIT.2011.6034162
état	Publié - 1 janv. 2011
Evénement	2011 IEEE International Symposium on Information Theory, ISIT 2011 - St. Petersburg, Russie Durée: 31 juil. 2011 → 5 août 2011

Série de publications

Nom	IEEE International Symposium on Information Theory - Proceedings
ISSN (imprimé)	2157-8095
ISSN (Electronique)	2157-8117

Une conférence

Une conférence	2011 IEEE International Symposium on Information Theory, ISIT 2011
Pays/Territoire	Russie
La ville	St. Petersburg
période	31/07/11 → 5/08/11

Accès au document

10.1109/ISIT.2011.6034162

Contient cette citation

Wang, C., Jafar, S. A., Shamai, S., & Wigger, M. (2011). Interference, cooperation and connectivity - A degrees of freedom perspective. Dans 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 (p. 430-434). Article 6034162 (IEEE International Symposium on Information Theory - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISIT.2011.6034162

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title = "Interference, cooperation and connectivity - A degrees of freedom perspective",

abstract = "We explore the interplay between interference, cooperation and connectivity in heterogeneous wireless interference networks. Specifically, we consider a 4-user locally-connected interference network with pairwise clustered decoding and show that its degrees of freedom (DoF) are bounded above by 12/5. Interestingly, when compared to the corresponding fully connected setting which is known to have 8/3 DoF, the locally connected network is only missing interference-carrying links, but still has lower DoF, i.e., eliminating these interference-carrying links reduces the DoF. The 12/5 DoF outer bound is obtained through a novel approach that translates insights from interference alignment over linear vector spaces into corresponding sub-modularity relationships between entropy functions.",

author = "Chenwei Wang and Jafar, \{Syed A.\} and Shlomo Shamai and Michele Wigger",

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Wang, C, Jafar, SA, Shamai, S & Wigger, M 2011, Interference, cooperation and connectivity - A degrees of freedom perspective. Dans 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011., 6034162, IEEE International Symposium on Information Theory - Proceedings, Institute of Electrical and Electronics Engineers Inc., p. 430-434, 2011 IEEE International Symposium on Information Theory, ISIT 2011, St. Petersburg, Russie, 31/07/11. https://doi.org/10.1109/ISIT.2011.6034162

Interference, cooperation and connectivity - A degrees of freedom perspective. / Wang, Chenwei; Jafar, Syed A.; Shamai, Shlomo et al.
2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011. Institute of Electrical and Electronics Engineers Inc., 2011. p. 430-434 6034162 (IEEE International Symposium on Information Theory - Proceedings).

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collection › Contribution à une conférence › Revue par des pairs

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T1 - Interference, cooperation and connectivity - A degrees of freedom perspective

AU - Wang, Chenwei

AU - Jafar, Syed A.

AU - Shamai, Shlomo

AU - Wigger, Michele

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Y1 - 2011/1/1

N2 - We explore the interplay between interference, cooperation and connectivity in heterogeneous wireless interference networks. Specifically, we consider a 4-user locally-connected interference network with pairwise clustered decoding and show that its degrees of freedom (DoF) are bounded above by 12/5. Interestingly, when compared to the corresponding fully connected setting which is known to have 8/3 DoF, the locally connected network is only missing interference-carrying links, but still has lower DoF, i.e., eliminating these interference-carrying links reduces the DoF. The 12/5 DoF outer bound is obtained through a novel approach that translates insights from interference alignment over linear vector spaces into corresponding sub-modularity relationships between entropy functions.

AB - We explore the interplay between interference, cooperation and connectivity in heterogeneous wireless interference networks. Specifically, we consider a 4-user locally-connected interference network with pairwise clustered decoding and show that its degrees of freedom (DoF) are bounded above by 12/5. Interestingly, when compared to the corresponding fully connected setting which is known to have 8/3 DoF, the locally connected network is only missing interference-carrying links, but still has lower DoF, i.e., eliminating these interference-carrying links reduces the DoF. The 12/5 DoF outer bound is obtained through a novel approach that translates insights from interference alignment over linear vector spaces into corresponding sub-modularity relationships between entropy functions.

U2 - 10.1109/ISIT.2011.6034162

DO - 10.1109/ISIT.2011.6034162

M3 - Conference contribution

AN - SCOPUS:80054828684

SN - 9781457705953

T3 - IEEE International Symposium on Information Theory - Proceedings

SP - 430

EP - 434

BT - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2011 IEEE International Symposium on Information Theory, ISIT 2011

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ER -

Wang C, Jafar SA, Shamai S, Wigger M. Interference, cooperation and connectivity - A degrees of freedom perspective. Dans 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011. Institute of Electrical and Electronics Engineers Inc. 2011. p. 430-434. 6034162. (IEEE International Symposium on Information Theory - Proceedings). doi: 10.1109/ISIT.2011.6034162

Interference, cooperation and connectivity - A degrees of freedom perspective

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