Cooperative Spectrum Sensing in Cognitive Radio, Part I: Two User Networks
Top Cited Papers
- 8 August 2007
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 6 (6) , 2204-2213
- https://doi.org/10.1109/twc.2007.05775
Abstract
In cognitive radio networks, cognitive (unlicensed) users need to continuously monitor spectrum for the presence of primary (licensed) users. In this paper, we illustrate the benefits of cooperation in cognitive radio. We show that by allowing the cognitive users operating in the same band to cooperate we can reduce the detection time and thus increase the overall agility. We first consider a two-user cognitive radio network and show how the inherent asymmetry in the network can be exploited to increase the agility. We show that our cooperation scheme increases the agility of the cognitive users by as much as 35%. We then extend our cooperation scheme to multicarrier networks with two users per carrier and analyze asymptotic agility gain. In Part II of our paper [1], we investigate multiuser single carrier networks. We develop a decentralized cooperation protocol which ensures agility gain for arbitrarily large cognitive network population.Keywords
This publication has 17 references indexed in Scilit:
- Adaptive channel allocation spectrum etiquette for cognitive radio networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Spectrum sharing for unlicensed bandsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Cooperative spectrum sensing in cognitive radio networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Scheduling variable rate links via a spectrum serverPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- User-central wireless system: ultimate dynamic channel allocationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage BehaviorIEEE Transactions on Information Theory, 2004
- User cooperation diversity-part I: system descriptionIEEE Transactions on Communications, 2003
- Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networksIEEE Transactions on Information Theory, 2003
- Some comments on the detection of Gaussian signals in Gaussian noiseIEEE Transactions on Information Theory, 1958
- On the detection of stochastic signals in additive normal noise--IIEEE Transactions on Information Theory, 1957