Proceedings ArticleDOI
Achievable Capacity Under the Interference Temperature Model
T.C. Clancy
- pp 794-802
TLDR
This research develops a model for the RF environment and determines probability distributions governing interference temperature as a function of various elements in the model, and proposes alternate usages for interference temperature and ways to boost capacity.Abstract:
The interference temperature model was proposed by the FCC in 2003 as a way to dynamically manage and allocate spectrum resources. It would allow unlicensed radios to sense their current RF environment and transmit in licensed bands, provided their transmission does not raise the interference temperature for that frequency band over the interference temperature limit. It never received much interest because nobody was sure exactly how to use it or how if it would work. This research focuses on a mathematical analysis of the interference temperature model in an effort to examine the relationships between the capacity achieved by the unlicensed network and the interference caused to the licensed network. We develop a model for the RF environment and determine probability distributions governing interference temperature as a function of various elements in the model. We then determine bounds on the amount of interference caused by implementing such a system. We examine model environments for a wireless WAN and a wireless LAN, each coexisting with a licensed carrier. For each, we quantify both the impact on the licensed signal and also the capacity achieved by our underlay network. By substituting numeric values for RF environments in which the interference temperature model might be applied, we show that achievable capacity is very small, while the impact the licensee can be very large. Based on this, we propose alternate usages for interference temperature and ways to boost capacity.read more
Citations
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Journal ArticleDOI
Advances in cognitive radio networks: A survey
Beibei Wang,K.J.R. Liu +1 more
TL;DR: Recent advances in research related to cognitive radios are surveyed, including the fundamentals of cognitive radio technology, architecture of a cognitive radio network and its applications, and important issues in dynamic spectrum allocation and sharing are investigated in detail.
Journal ArticleDOI
A Survey on MAC Strategies for Cognitive Radio Networks
TL;DR: The fundamental role of the MAC layer is shown and its functionalities in a cognitive radio (CR) network are identified and a classification of cognitive MAC protocols is proposed and advantages, drawbacks, and further design challenges of Cognitive MAC protocols are discussed.
Journal ArticleDOI
Ten years of research in spectrum sensing and sharing in cognitive radio
TL;DR: An overview of recent research achievements of including spectrum sensing, sharing techniques and the applications of CR systems is provided.
Book
Principles Of Cognitive Radio
TL;DR: 1. The concept of cognitive radio, capacity of cognitiveRadio networks, and Propagation issues for cognitive radio: a review.
Journal ArticleDOI
MAC Protocol for Opportunistic Cognitive Radio Networks with Soft Guarantees
TL;DR: A distributed cognitive radio MAC (COMAC) protocol that enables unlicensed users to dynamically utilize the spectrum while limiting the interference on primary (PR) users is developed and simulation results indicate that COMAC satisfies its target soft guarantees under different traffic loads and arbitrary user deployment scenarios.
References
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Proceedings ArticleDOI
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