Skip to main content
Presentation
Degrees of Freedom Region for an Interference Network With General Message Demands
2011 IEEE International Symposium on Information Theory Proceedings (ISIT)
  • Lei Ke, Qualcomm, Inc.
  • Aditya Ramamoorthy, Iowa State University
  • Zhengdao Wang, Iowa State University
  • Huarui Yin, University of Science and Technology of China
Document Type
Conference Proceeding
Conference
2011 IEEE International Symposium on Information Theory (ISIT)
Publication Version
Submitted Manuscript
Link to Published Version
https://doi.org/10.1109/TIT.2012.2189197
Publication Date
1-1-2011
DOI
10.1109/TIT.2012.2189197
Conference Title
IEEE International Symposium on Information Theory (ISIT)
Conference Date
July 31-August 5, 2011
Geolocation
(59.9342802, 30.335098600000038)
Abstract

We consider a single hop interference network with K transmitters, each with an independent message and J receivers, all having the same number (M) of antennas. Each receiver requests an arbitrary subset of the messages. This generalizes the well-known K user M antenna interference channel, where each message is requested by a unique receiver. For this setup, we derive the exact degrees of freedom (DoF) region. Our achievability scheme generalizes the interference alignment scheme proposed by Cadambe and Jafar '08. In particular, we achieve general points in the DoF region by using multiple base vectors and aligning the interference at each receiver to its largest (in the DoF sense) interferer. As a byproduct of our analysis, we recover the DoF region for the original interference channel.

Comments

This is a manuscript of a proceeding from the IEEE International Symposium on Information Theory (2011): 36, doi:10.1109/TIT.2012.2189197. Posted with permission.

Rights
Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Copyright Owner
IEEE
Language
en
File Format
application/pdf
Citation Information
Lei Ke, Aditya Ramamoorthy, Zhengdao Wang and Huarui Yin. "Degrees of Freedom Region for an Interference Network With General Message Demands" St. Petersburg, Russia2011 IEEE International Symposium on Information Theory Proceedings (ISIT) (2011)
Available at: http://works.bepress.com/zhengdao_wang/3/