Results 131 to 140 of about 138,567 (160)
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Spectrum Awareness: Techniques and Challenges for Active Spectrum Sensing

2007
Radio spectrum is not efficiently used, mainly due to the prevailing rigid frequency allocation policy. Only some bands of the spectrum - such as those bands used by cellular base stations - are heavily used. Many bands are not used at all or are used only part of the time.
Mämmelä Aarne   +3 more
openaire   +1 more source

Spectrum Sensing in Cogintive Radio Using Cooperative Spectrum Sensing

2023 Second International Conference on Electrical, Electronics, Information and Communication Technologies (ICEEICT), 2023
S Sivaranjani   +4 more
openaire   +1 more source

Multiplatform Spectrum Sensing Prototype

2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS), 2018
Smart spectrum sharing initiatives have been stimulated by the spectrum scarcity experienced nowadays. The option that secondary users may access idle channels avoiding harmful interferences to primary users is a viable option to alleviate the spectrum crunch.
Danilo Corral-De-Witt   +4 more
openaire   +1 more source

Robust Compressive Spectrum Sensing

2018
In this chapter, the existing work on compressive spectrum sensing in CRNs and the main contributions are firstly reviewed in Sect. 4.1. In Sect. 4.2, the proposed robust compressive spectrum sensing working at a single CR user is presented. Section 4.3 gives the related simulation results. Additionally, the proposed robust sub-Nyquist spectrum sensing
Yue Gao, Zhijin Qin
openaire   +1 more source

Secure Compressive Spectrum Sensing

2018
In this chapter, a malicious user detection model is proposed to improve the security of CSS networks. The low-rank MC technique is invoked in the proposed model. More specifically, Sect. 5.1 introduces the related work and main contributions of the work in this chapter.
Yue Gao, Zhijin Qin
openaire   +1 more source

Advanced Spectrum Sensing Techniques

2019
Spectrum sensing plays an important role in cognitive radio networks. Based on the bandwidth considered for spectrum sensing, it can be classified into narrowband and wideband spectrum sensing. Traditional spectrum sensing methods are devised for narrow band as it focuses on narrow frequency a range that is the channel bandwidth is lesser than the ...
P. T. V. Bhuvaneswari Mohan   +1 more
openaire   +1 more source

Basic Spectrum Sensing Techniques

2019
Cognitive radio network (CRN) is an upcoming networking technology that can utilize both radio spectrum and wireless resources efficiently based on the information gathered from the past experience. There are two types of users in CRN, namely primary and secondary.
null Bhuvaneswari P. T. V., null Bino J.
openaire   +1 more source

Region-Based Spectrum Sensing

2016
In cognitive radio systems, spectrum sensing is critical since it determines which kind of spectrum sharing schemes can be used. For example, in cognitive small cell networks, a large number of small cells with short transmission range can share the same spectrum band with a macro cell.
Guodong Zhao, Wei Zhang, Shaoqian Li
openaire   +1 more source

Distributed spectrum sensing

In summary, the invention relates to a device, a system, a method and a computer program for spectrum sensing. A detection procedure for detecting a signal of interest or an event by using a plurality of sensing devices capable of communicating with a central unit is proposed.
Pandharipande, Ashish Vijay   +2 more
openaire  

Oncologic emergencies and urgencies: A comprehensive review

Ca-A Cancer Journal for Clinicians, 2022
Bonnie Gould Rothberg   +2 more
exaly  

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