NDLI: The capacity of the semi-deterministic cognitive interference channel with a common cognitive message and approximate capacity for the Gaussian case

Content Provider	IEEE Xplore Digital Library
Author	Rini, S. Huppert, C.
Copyright Year	2012
Description	Author affiliation: Institute for Communications Engineering, Technische Universität München, Germany (Rini, S.) \|\| Institute of Communications Engineering, Ulm University, Germany (Huppert, C.)
Abstract	In this paper we study the cognitive interference channel with a common message, a variation of the classical cognitive interference channel in which the cognitive message is decoded at both receivers. We derive the capacity for the semi-deterministic model, a class of channels in which the output at the cognitive decoder is a deterministic function of the channel inputs. We also show capacity to within a constant gap and a constant factor for the Gaussian channel. Most of these results are shown using an interesting transmission scheme in which the cognitive message, decoded at both receivers, is also pre-coded against the interference experienced at the cognitive receiver. The pre-coding of the cognitive message does not allow the primary decoder to reconstruct the interfering signal; the cognitive message acts instead as a side information at the primary receiver when decoding its intended message.
Starting Page	1812
Ending Page	1816
File Size	457552
Page Count	5
File Format	PDF
ISBN	9781467325806
ISSN	21578117
e-ISBN	9781467325790
e-ISBN	9781467325783
DOI	10.1109/ISIT.2012.6283592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Interference channels Decoding Radio transmitters Cognitive radio approximate capacity cognitive interference channel superposition binning semi-deterministic channel
Content Type	Text
Resource Type	Article

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