Cognitive Medium Access: Constraining Interference Based on Experimental Models,” submitted to (2007)
| Venue: | IEEE Journal on Selected Areas in Communications |
| Citations: | 12 - 3 self |
BibTeX
@ARTICLE{Geirhofer07cognitivemedium,
author = {Stefan Geirhofer and Student Member and Lang Tong and Brian M. Sadler},
title = {Cognitive Medium Access: Constraining Interference Based on Experimental Models,” submitted to},
journal = {IEEE Journal on Selected Areas in Communications},
year = {2007}
}
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Abstract
Abstract — In this paper we design a cognitive radio that can coexist with multiple parallel WLAN channels while abiding by an interference constraint. The interaction between both systems is characterized by measurement and coexistence is enhanced by predicting the WLAN’s behavior based on a continuoustime Markov chain model. Cognitive Medium Access (CMA) is derived from this model by recasting the problem as a constrained Markov decision process. Solutions are obtained by linear programming. Furthermore, we show that optimal CMA admits structured solutions, simplifying practical implementations. Preliminary results for the partially observable case are presented. The performance of the proposed schemes is evaluated for a representative Bluetooth/WLAN coexistence setup and shows a significant performance improvement.
