On Bounds for the Cognitive Multiple Access Z-Interference Channel

Retegui, F., Shakir, M. Z., Imran, M. A. , Tafazolli, R., Qaraqe, K. A. and Ngatched, T. M.N. (2015) On Bounds for the Cognitive Multiple Access Z-Interference Channel. In: 2015 IEEE 14th Canadian Workshop on Information Theory (CWIT), St. John's, NL, Canada, 06-09 Jul 2015, pp. 46-49. ISBN 9781479965601 (doi: 10.1109/CWIT.2015.7255149)

Abstract

The Cognitive Multiple Access Z-Interference Channel consists of a MAC channel that receives interference from an external transmitter. In a previous work we studied this model where both MAC users are cognitive and showed that an encoding scheme based on Dirty Paper coding attains the capacity region for the Gaussian case. In this work we assume that only one MAC user is cognitive and show that the non-cognitive MAC user can still benefit from the cognition of the other MAC user compared to the case where none of the MAC users are cognitive. We compare the achievable rate region obtained for our model with those for the cases where interference is treated as noise and where part of the primary user's message is decodable at the MAC receiver.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad
• Authors: Retegui, F., Shakir, M. Z., Imran, M. A., Tafazolli, R., Qaraqe, K. A., and Ngatched, T. M.N.
• College/School: College of Science and Engineering > School of Engineering
• ISBN: 9781479965601