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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 +2 more
exaly +3 more sources
The Radio Spectrum of Sgr A∗ [PDF]
Symposium - International Astronomical Union, 1996 We discuss the radio spectrum of Sgr A∗ in the frequency range between ≈ 1 GHz and ≈ 1 000 GHz, show that it can be explained by optically thin synchrotron radiation of relativistic electrons, and point toward a possible correlation between the spectrum of Sgr A∗ and larger-scale (≲ 50 pc) radio emission from the Galactic Center region.
Duschl, Wolfgang J., Lesch, Harald
openaire +4 more sources
Practical Evaluation Method of Large Size IRS: Synthesis of Reflection Pattern of Sub-IRS
IEEE Access, 2023 Intelligent reflecting surfaces (IRSs) have been attracting attention as a solution to coverage hole problems in millimeter-wave communication areas and are considered one of the key technologies of next-generation mobile communication systems.
Hiromi Matsuno +3 more
doaj +1 more source
Measurement and Evaluation of 28 GHz Propagation Characteristics in Specific Environments
IEEE Access, 2022 New specific scenarios are expected for 5G systems in various environments, such as stadiums, subway platforms, factories, livestock barns. On the other hand, the applicability of conventional propagation models to new specific environments has not been ...
Satoshi Ito, Takahiro Hayashi
doaj +1 more source
Coexistence of Cellular and IEEE 802.11 Technologies in Unlicensed Spectrum Bands -A Survey
IEEE Open Journal of the Communications Society, 2021 This paper provides a comprehensive survey on the coexistence of cellular and IEEE 802.11 standards from a holistic viewpoint that takes into account the coexistence of all existing and future cellular and IEEE 802.11 standards in all the available ...
Rony Kumer Saha
doaj +1 more source
IEEE Access, 2021 In this paper, we present a framework to give a comprehensive review of how to improve the spectrum utilization of millimeter-wave (mmWave) systems using indoor small cells in multi-operator network scenarios.
Rony Kumer Saha
doaj +1 more source
IEEE Access, 2020 In this paper, we propose two spectrum utilization improvement approaches (SUIAs), namely SUIA 1 and SUIA 2, based on whether or not the licensed 28 GHz millimeter-wave (mmWave) spectrum is allocated equally to each mobile network operator (MNO) in a ...
Rony Kumer Saha
doaj +1 more source
IEEE Access, 2020 The traditional static allocation of a portion of the licensed spectrum specified for a country to a mobile network operator (MNO) is no longer sufficient to address the required spectrum demand, as well as efficient to utilize the allocated spectrum. To
Rony Kumer Saha
doaj +1 more source
A Radio Spectrum Measurement Platform for Spectrum Surveying in Cognitive Radio [PDF]
, 2012 This paper presents a sophisticated radio spectrum measurement platform specifically envisaged and designed for spectrum occupancy surveys in the context of Dynamic Spectrum Access/Cognitive Radio (DSA/CR). The presented tool is a very flexible computer-controlled radio measurement system, which has successfully been used in extensive spectrum ...
López Benítez, Miguel +1 more
openaire +4 more sources
A Tactic for Architectural Exploitation of Indoor Small Cells for Dynamic Spectrum Sharing in 5G
IEEE Access, 2020 This paper presents a tactic to realize numerous in-building small cell base station (SBS) architectures for dynamic spectrum sharing by varying the number of physical transceivers as well as the number, amount, and characteristics of operating spectrums
Rony Kumer Saha
doaj +1 more source