Signal processing in cognitive radio
Cognitive radio allows for usage of licensed frequency bands by unlicensed users.
However, these unlicensed (cognitive) users need to monitor the spectrum continuously to …
However, these unlicensed (cognitive) users need to monitor the spectrum continuously to …
What is a spectrum hole and what does it take to recognize one?
ldquoSpectrum holesrdquo represent the potential opportunities for noninterfering (safe) use
of spectrum and can be considered as multidimensional regions within frequency, time, and …
of spectrum and can be considered as multidimensional regions within frequency, time, and …
Cooperative spectrum sensing based on the limiting eigenvalue ratio distribution in Wishart matrices
Recent advances in random matrix theory have spurred the adoption of eigenvalue-based
detection techniques for cooperative spectrum sensing in cognitive radio. These techniques …
detection techniques for cooperative spectrum sensing in cognitive radio. These techniques …
Application of fuzzy logic to cognitive radio systems
M Matinmikko, T Rauma, M Mustonen… - IEICE transactions on …, 2009 - search.ieice.org
This paper reviews applications of fuzzy logic to telecommunications and proposes a novel
fuzzy combining scheme for cooperative spectrum sensing in cognitive radio systems. A …
fuzzy combining scheme for cooperative spectrum sensing in cognitive radio systems. A …
Performance evaluation of cognitive radios: Metrics, utility functions, and methodology
Performance evaluation of cognitive radio (CR) networks is an important problem but has
received relatively limited attention from the CR community. Unlike traditional radios, a …
received relatively limited attention from the CR community. Unlike traditional radios, a …
A novel sensing coordination framework for CR-VANETs
XY Wang, PH Ho - IEEE transactions on vehicular technology, 2009 - ieeexplore.ieee.org
This paper introduces a novel framework of coordinated spectrum sensing in cognitive-radio-
enhanced vehicular ad hoc networks (CR-VANETs). The proposed sensing coordination …
enhanced vehicular ad hoc networks (CR-VANETs). The proposed sensing coordination …
Energy detection based spectrum sensing for sensing error minimization in cognitive radio networks
DC Oh, YH Lee - International Journal of Communication …, 2009 - search.proquest.com
In this paper, we investigate an optimization of threshold level with energy detection to
improve the spectrum sensing performance. Determining threshold level to minimize …
improve the spectrum sensing performance. Determining threshold level to minimize …
Sigma set: A small second order statistical region descriptor
Given an image region of pixels, second order statistics can be used to construct a
descriptor for object representation. One example is the covariance matrix descriptor, which …
descriptor for object representation. One example is the covariance matrix descriptor, which …
Reliability of spectrum sensing under noise and interference uncertainty
Spectrum sensing is a fundamental problem in cognitive radio. As a result, it has been
reborn as a very active research area in recent years despite its long history. Although …
reborn as a very active research area in recent years despite its long history. Although …
Spatial spectrum holes for cognitive radio with relay-assisted directional transmission
Spectrum hole (SH) is defined as a spectrum band that can be utilized by unlicensed users,
which is a basic resource for cognitive radio (CR) systems. Most of existing contributions …
which is a basic resource for cognitive radio (CR) systems. Most of existing contributions …