Abstract:
A cognitive radio (CR) network should be able to sense its environment and adapt its communication to utilize unused licensed spectrum without interfering with incumbents...Show MoreMetadata
Abstract:
A cognitive radio (CR) network should be able to sense its environment and adapt its communication to utilize unused licensed spectrum without interfering with incumbents. Properly modeling the expected interference from the CR network is therefore very important in the definition of coexistence rules to efficiently protect the incumbents. In this paper we model the accumulative interference generated from a large-scale CR network and investigate how this affects the sensing requirements of the CRs to meet an interference constraint. More specifically, our model considers the impact of discrete topology and the impact of the distributed channel access scheme. As an instantiation of our model, we consider a CR network based on the IEEE 802.11 standard. We show that the interference generated is large, since collisions cannot be avoided.
Published in: 2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)
Date of Conference: 15-17 May 2008
Date Added to IEEE Xplore: 15 July 2008
ISBN Information:
ISSN Information:
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- IEEE Keywords
- Index Terms
- Channel Access ,
- Cognitive Radio ,
- Interference Model ,
- Distributed Channel Access ,
- Collision ,
- Wireless Networks ,
- Cognitive Networks ,
- Silencing ,
- Hot Spots ,
- Maximum Power ,
- Protected Areas ,
- Gamma Distribution ,
- Shape Parameter ,
- Duty Cycle ,
- Path Loss ,
- Poisson Process ,
- Edge Area ,
- Direct Interference ,
- Single Transmission ,
- Interference Power ,
- Received Signal Power ,
- Impact Of Interference ,
- Simultaneous Transmission
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Channel Access ,
- Cognitive Radio ,
- Interference Model ,
- Distributed Channel Access ,
- Collision ,
- Wireless Networks ,
- Cognitive Networks ,
- Silencing ,
- Hot Spots ,
- Maximum Power ,
- Protected Areas ,
- Gamma Distribution ,
- Shape Parameter ,
- Duty Cycle ,
- Path Loss ,
- Poisson Process ,
- Edge Area ,
- Direct Interference ,
- Single Transmission ,
- Interference Power ,
- Received Signal Power ,
- Impact Of Interference ,
- Simultaneous Transmission