Proceedings ArticleDOI
A scalable dynamic spectrum allocation system with interference mitigation for teams of spectrally agile software defined radios
Marc Olivieri,G. Barnett,Alex Lackpour,A. Davis,P. Ngo +4 more
- pp 170-179
TLDR
A robust method for estimating locally the unused or underutilized regions of RF spectrum to optimize dynamic spectrum usage and the effect on reducing the risk of interference by collaborating across multiple nodes that provides increased robustness of sensing of open spectrum through spatial diversity is presented.Abstract:
In future applications, next generation spectrally agile software defined radios (SASDR) will be equipped with advanced radio frequency (RF) sensors that will enable them to sense their environment and adaptively select the best and most stable portions of the spectrum to establish communications. This paper presents a robust method for estimating locally the unused or underutilized regions of RF spectrum to optimize dynamic spectrum usage. These adaptive algorithms are described and results of "open spectrum" estimation performed on real RF spectrum measurements illustrate the robust performance of the approach. Simulation results are shown along with results from real measurements that describe the RF resources in rural, suburban and urban areas in and around Philadelphia in the VHF and UHF bands. The measurements represent a good dynamic data set including motion and spatio-temporal diversity. The effect on reducing the risk of interference by collaborating across multiple nodes that provides increased robustness of sensing of open spectrum through spatial diversity is also discussed and quantitative values for the interference mitigation under collaborative behaviors are also presentedread more
Citations
More filters
Journal ArticleDOI
A survey of spectrum sensing algorithms for cognitive radio applications
T. Yucek,Huseyin Arslan +1 more
TL;DR: In this paper, a survey of spectrum sensing methodologies for cognitive radio is presented and the cooperative sensing concept and its various forms are explained.
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
Defense against Primary User Emulation Attacks in Cognitive Radio Networks
TL;DR: A transmitter verification scheme, called LocDef (localization-based defense), which verifies whether a given signal is that of an incumbent transmitter by estimating its location and observing its signal characteristics, and suggests that LocDef is effective in identifying PUE attacks under certain conditions.
Proceedings ArticleDOI
Robust Distributed Spectrum Sensing in Cognitive Radio Networks
TL;DR: This work proposes a new data fusion technique that uses a variable number of samples, and introduces a reputation-based mechanism to the Sequential Probability Ratio Test (SPRT), which is evaluated by comparing it with a variety of data fusion techniques under various network operating conditions.
Proceedings ArticleDOI
Ensuring Trustworthy Spectrum Sensing in Cognitive Radio Networks
Ruiliang Chen,Jung-Min Park +1 more
TL;DR: This investigation shows that a PUE attack can severely interfere with the spectrum sensing process and significantly reduce the channel resources available to legitimate unlicensed users, and proposes a transmitter verification procedure that can be integrated into the Spectrum sensing mechanism.
References
More filters
Journal ArticleDOI
Multiple emitter location and signal parameter estimation
TL;DR: In this article, a description of the multiple signal classification (MUSIC) algorithm, which provides asymptotically unbiased estimates of 1) number of incident wavefronts present; 2) directions of arrival (DOA) (or emitter locations); 3) strengths and cross correlations among the incident waveforms; 4) noise/interference strength.
Proceedings ArticleDOI
Implementation issues in spectrum sensing for cognitive radios
TL;DR: To improve radio sensitivity of the sensing function through processing gain, three digital signal processing techniques are investigated: matched filtering, energy detection and cyclostationary feature detection.
Proceedings ArticleDOI
Cognitive radio for flexible mobile multimedia communications
TL;DR: This paper characterizes the potential contributions of cognitive radio to spectrum pooling and outlines an initial framework for formal radio-etiquette protocols.
Journal ArticleDOI
Cognitive radio for flexible mobile multimedia communications
Joseph Mitola,Joseph Mitola +1 more
TL;DR: This paper characterizes the potential contributions of cognitive radio to spectrum pooling and outlines an initial framework for formal radio-etiquette protocols.
Journal ArticleDOI
Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency
T. Weiss,Friedrich K. Jondral +1 more
TL;DR: The technical challenges that have to be met when implementing the interesting new technology of spectrum pooling are described, which represents the coexistence of two mobile radio systems within the same frequency range.