Results 11 to 20 of about 542,859 (281)
A Sensing Error Aware MAC Protocol for Cognitive Radio Networks [PDF]
, 2011 Cognitive radios (CR) are intelligent radio devices that can sense the radio environment and adapt to changes in the radio environment. Spectrum sensing and spectrum access are the two key CR functions.
Hu, Donglin, Mao, Shiwen
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Collaborative spectrum sensing optimisation algorithms for cognitive radio networks [PDF]
, 2010 The main challenge for a cognitive radio is to detect the existence of primary users reliably in order to minimise the interference to licensed communications. Hence, spectrum sensing is a most important requirement of a cognitive radio.
Arshad, Kamran +2 more
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Deep Learning for Spectrum Sensing [PDF]
IEEE Wireless Communications Letters, 2019 In cognitive radio systems, the ability to accurately detect primary user's signal is essential to secondary user in order to utilize idle licensed spectrum. Conventional energy detector is a good choice for blind signal detection, while it suffers from the well-known SNR-wall due to noise uncertainty. In this letter, we firstly propose a deep learning
Jiabao Gao +4 more
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Spectrum Sensing for Cognitive Radio [PDF]
Proceedings of the IEEE, 2009 Spectrum sensing is the very task upon which the entire operation of cognitive radio rests. For cognitive radio to fulfill the potential it offers to solve the spectrum underutilization problem and do so in a reliable and computationally feasible manner, we require a spectrum sensor that detects spectrum holes (i.e., underutilized subbands of the radio
Simon Haykin 0001 +2 more
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ON THE LOCATION-AWARE COOPERATIVE SPECTRUM SENSING IN URBAN ENVIRONMENT [PDF]
Jordanian Journal of Computers and Information Technology, 2016 Spectrum sensing is a key enabling technology for cognitive radio networks (CRNs). The main objective of spectrum sensing is to provide more spectrum access opportunities to cognitive radio users without interfering with the operations of the licensed ...
Raouf Abozariba +3 more
doaj +1 more source
Spectrum sensing infrastructure support for IEEE 1900.6b sensing-assisted spectrum databases [PDF]
2016 IEEE Conference on Standards for Communications and Networking (CSCN), 2016 Spectrum databases are increasingly being used, particularly in spectrum sharing mechanisms, but also in realms such as network optimization, novel licensing regimes, and regulatory monitoring, among others. Spectrum databases are often far more effective, reactive, or sometimes even are required to operate, in conjunction with spectrum sensing ...
Bernd Bochow +2 more
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Reputation-Based Spectrum Sensing Strategy Selection in Cognitive Radio Ad Hoc Networks
Sensors, 2018 Spectrum sensing plays an essential role in the detection of unused spectrum whole in cognitive radio networks, including cooperative spectrum sensing (CSS) and independent spectrum sensing.
Zhiguo Sun +4 more
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Optimization of Spectrum Utilization in Cooperative Spectrum Sensing
Sensors, 2019 This paper presents an analytical framework for the probability of spectrum hole utilization (PSHU) of a cognitive radio system with soft cooperative spectrum sensing (CSS) under a practical consideration of fixed frame structure. In practical systems, the length of a time-frame is generally fixed, where the time-frame consists of sensing, reporting ...
Mohsin Ali, Haewoon Nam
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Adaptive spectrum sensing and estimation [PDF]
2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013 We propose a multistage adaptive approach to spectrum sensing and estimation with the goal of concentrating more sensing resources on spectral components of interest. The allocation of resources to minimize the mean squared estimation error is formulated as a dynamic program. An optimal policy is given for the case of two sensing stages.
Dennis L. Wei, Alfred O. Hero III
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Advanced Energy Detector Based Cooperative Spectrum Sensing In Cognitive Networks
MATEC Web of Conferences, 2016 Cognitive radio is a befitting hopeful technology for future. Spectrum sensing is the most critical function of cognitive radio. Most of the spectrums sensing processes proposed earlier become impractical at lower signal to noise ratio conditions.
Ritu, Seehra Ameeta
doaj +1 more source