Document Type
Conference Proceeding
Conference
2011 IEEE International Symposium on Information Theory (ISIT)
Publication Version
Accepted Manuscript
Link to Published Version
https://doi.org/10.1109/ISIT.2011.6034148
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.
Rights
© 2011 IEEE. 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.
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, Russia
2011 IEEE International Symposium on Information Theory Proceedings (ISIT) (2011) p. 36 - 40
Available at: http://works.bepress.com/zhengdao_wang/3/
This is a manuscript of a proceeding published as Ke, Lei, Aditya Ramamoorthy, Zhengdao Wang, and Huarui Yin. "Degrees of freedom region for an interference network with general message demands." In 2011 IEEE International Symposium on Information Theory Proceedings (2011): 36-40. DOI: 10.1109/TIT.2012.2189197. Posted with permission.