Title
The cognitive interference channel with a causal relay in very strong interference
Date Issued
01 April 2015
Access level
open access
Resource Type
journal article
Author(s)
Imran M.
Tafazolli R.
University of Surrey
Publisher(s)
Institute of Electrical and Electronics Engineers Inc.
Abstract
We study the cognitive interference channel where an additional node (a relay) is present. In our model the relay's operation is causal rather than strictly causal, i.e., the relay's transmit symbol depends not only on its past but also on its current received symbol. We derive outer bounds for the discrete and Gaussian cases in very strong interference. A scheme for achievability based on instantaneous amplify-and-forward relaying is proposed for this model. The inner and outer bounds coincide for a special case of very strong interference.
Start page
593
End page
596
Volume
19
Issue
4
Language
English
OCDE Knowledge area
Ingeniería, Tecnología Ingeniería eléctrica, Ingeniería electrónica
Scopus EID
2-s2.0-84927724683
Source
IEEE Communications Letters
ISSN of the container
10897798
Sources of information: Directorio de Producción Científica Scopus