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"8802-11-2022 - ISO/IEC/IEEE - International Standard - Telecommunications and information exchange between systems - Specific requirements for local and metropolitan area networks . Part 11 : Wireless LAN medium access control (MAC) and physical layer (PHY) specifications" / / IEEE
| "8802-11-2022 - ISO/IEC/IEEE - International Standard - Telecommunications and information exchange between systems - Specific requirements for local and metropolitan area networks . Part 11 : Wireless LAN medium access control (MAC) and physical layer (PHY) specifications" / / IEEE |
| Pubbl/distr/stampa | New York : , : IEEE, , 2022 |
| Descrizione fisica | 1 online resource (4382 pages) |
| Disciplina | 004.68 |
| Soggetto topico |
Wireless LANs
Beamforming Telecommunication |
| ISBN | 1-5044-9121-1 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISA-996574993903316 |
| New York : , : IEEE, , 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
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Array beamforming with linear difference equations / / Jacob Benesty, Israel Cohen, Jingdong Chen
| Array beamforming with linear difference equations / / Jacob Benesty, Israel Cohen, Jingdong Chen |
| Autore | Benesty Jacob |
| Edizione | [1st ed. 2021.] |
| Pubbl/distr/stampa | Cham, Switzerland : , : Springer, , [2021] |
| Descrizione fisica | 1 online resource (VIII, 170 p. 95 illus., 94 illus. in color.) |
| Disciplina | 621.3822 |
| Collana | Springer Topics in Signal Processing |
| Soggetto topico | Beamforming |
| ISBN | 3-030-68273-0 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Introduction -- A Brief Overview of Conventional Beamforming -- Beamforming with First-Order Linear Difference Equations -- Beamforming with Second-Order Linear Difference -- Beamforming with Higher-Order Linear Difference Equations -- Application to Speech Enhancement -- A Spectral Graph Perspective -- Conclusion. |
| Record Nr. | UNINA-9910484424003321 |
Benesty Jacob
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| Cham, Switzerland : , : Springer, , [2021] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Beamforming antennas in wireless networks : multihop and millimeter wave communication networks / / Osama Bazan, Baha Uddin Kazi, Muhammad Jaseemuddin
| Beamforming antennas in wireless networks : multihop and millimeter wave communication networks / / Osama Bazan, Baha Uddin Kazi, Muhammad Jaseemuddin |
| Autore | Bazan Osama |
| Pubbl/distr/stampa | Cham, Switzerland : , : Springer, , [2021] |
| Descrizione fisica | 1 online resource (128 pages) |
| Disciplina | 621.3822 |
| Collana | SpringerBriefs in electrical and computer engineering |
| Soggetto topico | Beamforming |
| ISBN | 3-030-77459-7 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Intro -- Contents -- 1 Introduction -- 1.1 Wireless Networks -- 1.2 Beamforming Antennas: A Promising Technology -- 1.2.1 Potential Benefits -- 1.2.2 Challenges in the Upper Layers -- 1.3 Organization of the Book -- References -- 2 Overview of Beamforming Antennas -- 2.1 Fundamentals -- 2.2 Smart Antennas Technology -- 2.2.1 Beamforming Antennas -- 2.2.2 MIMO Systems -- 2.3 Types of Beamforming Antennas -- 2.3.1 Switched Beam Antenna Systems -- 2.3.2 Steered Beam Antenna Systems -- 2.4 Millimeter Wave Beamforming -- References -- 3 MAC Issues -- 3.1 Medium Access Control with Omni-Directional Antennas -- 3.2 MAC Challenges with Beamforming Antennas -- 3.2.1 Deafness -- 3.2.2 New Hidden Terminals -- 3.2.3 Head-of-Line Blocking -- 3.2.4 Communication Range Under-Utilization -- 3.2.5 MAC-Layer Capture -- References -- 4 Directional MAC -- 4.1 Directional MAC Design Choices -- 4.1.1 Transmission Mode of RTS/CTS Packets -- 4.1.2 Virtual Carrier Sensing -- 4.1.3 Idle Listening Mode -- 4.1.4 Backoff -- 4.1.5 Beamforming Information -- 4.1.6 Tones -- 4.1.7 Synchronized Access -- 4.2 Overview of Directional MAC Protocols -- 4.2.1 Classification -- 4.2.2 Random Access Protocols -- 4.2.3 Synchronized Access Protocols -- 4.3 Basic Directional MAC (DMAC) -- 4.3.1 DMAC with Omni-Directional Backoff -- 4.4 Circular Directional RTS MAC (CDR) -- 4.5 Opportunistic Directional MAC (OPMAC) -- 4.5.1 Main Design Considerations -- 4.5.2 Protocol Description -- 4.5.3 Performance Evaluation -- References -- 5 Enhanced MAC for Millimeter Wave Communication -- 5.1 Introduction -- 5.2 Beacon Frame -- 5.3 Enhanced Distributed Channel Access (EDCA) -- 5.4 Multiple Channel Access -- 5.5 Cooperative MAC Protocol -- 5.5.1 Contention Free Cooperative MAC Protocol -- 5.5.2 Contention-Based Cooperative MAC Protocol -- 5.6 Dual-Band MAC Protocol.
5.7 Pre-defined Virtual Grouping MAC Protocol -- References -- 6 Directional Routing -- 6.1 Introduction -- 6.2 Neighbor Discovery -- 6.3 Route Discovery -- 6.3.1 Route Discovery Optimization -- 6.4 Directional Routing Schemes -- 6.4.1 Directional DSR (DDSR) -- 6.4.2 Directional Routing Protocol (DRP) -- 6.4.3 Zone Disjoint Routing (ZDR) -- 6.4.4 DSR with Directional Antenna for Partition Bridging -- 6.4.5 Capture-Aware Routing -- References -- 7 Directional QoS Routing Framework -- 7.1 QoS Guarantees in Multi-hop Wireless Networks -- 7.1.1 QoS Routing with Contention-Free MAC -- 7.1.2 QoS Routing with Contention-Based MAC -- 7.2 Conflict Analysis Framework -- 7.2.1 System Model -- 7.2.2 Classification of Link Conflicts -- 7.2.3 Colored Conflict Graph -- 7.3 QoS Routing Problem -- 7.3.1 Problem Formulation -- 7.3.2 Probability of Successful Transmission PS(i, j) -- 7.3.3 QoS Routing Algorithm -- 7.4 Performance Evaluation -- References -- 8 Open Research Areas -- 8.1 Cross Layer Design for Directional MAC and Routing -- 8.2 Multi-hop Wireless Networks with Heterogeneous Antennas -- 8.3 Using Beamforming Antennas in Indoor Environments -- 8.4 Analytical Modeling for Directional MAC -- 8.5 QoS-Aware Directional Routing Protocols -- 8.6 Joint Optimization of Different Physical Layer Capabilities -- 8.7 Research Issues for mmWave WLAN -- References. |
| Record Nr. | UNINA-9910491024103321 |
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Bazan Osama
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| Cham, Switzerland : , : Springer, , [2021] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Evaluating the Acoustic effect of over-the-rotor Foam-Metal Liner installed on a low speed fan using Virtual Rotating Microphone imaging [[electronic resource] /] / Daniel L. Sutliff, Robert P. Dougherty, Bruce E. Walker ; prepared for the 16th Aeroacoustics Conference cosponsored by the American Institute of Aeronautics and Astronautics and the Confederation of European Aerospace Societies, Stockholm, Sweden, June 7-9, 2010
| Evaluating the Acoustic effect of over-the-rotor Foam-Metal Liner installed on a low speed fan using Virtual Rotating Microphone imaging [[electronic resource] /] / Daniel L. Sutliff, Robert P. Dougherty, Bruce E. Walker ; prepared for the 16th Aeroacoustics Conference cosponsored by the American Institute of Aeronautics and Astronautics and the Confederation of European Aerospace Societies, Stockholm, Sweden, June 7-9, 2010 |
| Autore | Sutliff Daniel L (Daniel Linden), <1962-> |
| Pubbl/distr/stampa | Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , [2010] |
| Descrizione fisica | 1 online resource (13 pages) : illustrations, color |
| Altri autori (Persone) |
DoughertyRobert P
WalkerBruce E |
| Collana | NASA/TM |
| Soggetto topico |
Beamforming
Broadband Noise reduction Phased arrays Test stands Annular ducts |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910699905403321 |
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Sutliff Daniel L (Daniel Linden), <1962->
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| Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , [2010] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Hybride Beamformingsysteme niedriger Komplexität für den Mobilfunk / / Jörg Eisenbeis
| Hybride Beamformingsysteme niedriger Komplexität für den Mobilfunk / / Jörg Eisenbeis |
| Autore | Eisenbeis Jörg |
| Pubbl/distr/stampa | Karlsruhe : , : KIT Scientific Publishing, , 2022 |
| Descrizione fisica | 1 online resource (xxix, 239 pages) : illustrations |
| Disciplina | 621.381 |
| Soggetto topico | Beamforming |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | ger |
| Nota di contenuto | Vorwort des Herausgebers i -- Zusammenfassung . iii -- Vorwort v -- Abkürzungen und Symbole xi -- 1 Mobilfunksysteme der Zukunft 1 -- 1.1 Trends zukünftiger Mobilfunkkommunikationssysteme . 3 -- 1.1.1 Small Cells . 3 -- 1.1.2 Zentimeter- und Millimeterwellen . 5 -- 1.1.3 Mehrantennenkommunikationssysteme 6 -- 1.2 Mehrantennensysteme niedriger Komplexität 9 -- 1.3 Zielsetzung und Gliederung der Dissertation . 13 -- 2 MIMO-Signaltheorie und Kanalmodellierung 17 -- 2.1 Mehrantennenkommunikationssysteme 17 -- 2.1.1 Beschreibung von Antennenarraysystemen 18 -- 2.1.2 Signaltheorie zu Mehrantennensystemen . 20 -- 2.1.3 MIMO-OFDM-Signalverarbeitung 27 -- 2.2 Kanalcharakterisierung und -modellierung bei 28 GHz . 30 -- 2.2.1 Kanalmesssysteme . 31 -- 2.2.2 Dämpfungsfaktoren des drahtlosen Übertragungskanals 32 -- 2.2.3 Dynamische Ausbreitungseffekte . 37 -- 2.2.4 MIMO-Kanalmodellierung . 39 -- 2.3 Zusammenfassung zu Kapitel 2 43 -- 3 MIMO-Kanalmesssystem bei 28 GHz 45 -- 3.1 Realisierungen von Kanalmesssystemen . 46 -- 3.2 MIMO-Kanalmesssystem 47 -- 3.2.1 Systemaufbau 48 -- 3.2.2 Kanalschätzungsprinzip 53 -- 3.2.3 Kalibrierungsprinzip und Validierung des Kanalmesssystems . 55 -- 3.3 Ergebnisse der Kanalmesskampagnen . 59 -- 3.3.1 Messszenarien 60 -- 3.3.2 Analyse des 28 GHz-Übertragungskanals . 61 -- 3.4 Zusammenfassung zu Kapitel 3 68 -- 4 Hybride Beamformingarchitekturen und -algorithmen 71 -- 4.1 Grundlagen hybrider Beamformingsysteme 71 -- 4.2 Hybride Beamformingarchitekturen niedriger Komplexität 76 -- 4.2.1 Subarray-basierte hybride Beamformingsysteme . 77 -- 4.2.2 Subarray-basierte hybride Beamformingsysteme mit Schaltern 89 -- 4.2.3 Subarray-basierte hybride Beamformingsysteme -- mit zusätzlichen Freiheitsgraden . 91 -- 4.3 Energieeffizienz hybrider Beamformingarchitekturen 96 -- 4.4 Vergleich hybrider Beamformingarchitekturen 98 -- 4.4.1 Numerische Analyse mittels PBCM 99 -- 4.4.2 Untersuchung anhand gemessener Übertragungskanäle 105 -- 4.4.3 Effizienzbetrachtung des MIMO-Demonstrators . 108 -- 4.5 Zusammenfassung zu Kapitel 4 112 -- 5 Kanalschätzungsmethoden für hybride Beamformingsysteme 115 -- 5.1 Aktuelle Forschung zu MIMO-Kanalschätzungsverfahren 116 -- 5.1.1 Grundprinzipien der MIMO-Kanalschätzung 116 -- 5.1.2 Suchverfahren 117 -- 5.1.3 Ausnutzung gewonnener Kanalinformationen in niedrigeren Frequenzbereichen . 120 -- 5.1.4 Suchoptimierung durch räumliche Positionsdaten 121 -- 5.1.5 Komprimierte Erfassung dünnbesetzter Übertragungskanäle . 121 -- 5.2 Hierarchische Suchverfahren 123 -- 5.3 Kanalschätzung mittels dünnbesetzter Antennenarrays . 126 -- 5.3.1 SABA-Verfahren 128 -- 5.3.2 MSAM-Verfahren 131 -- 5.3.3 Rekonstruktion der MIMO-Kanalmatrix basierend auf zuschaltbaren Bandpassfiltern 133 -- 5.3.4 Kombination des MSAM- und SABA-Verfahrens 135 -- 5.4 Vergleich der Kanalschätzverfahren 135 -- 5.4.1 Berechnung und Vergleich der Kanalschätzungsdauer 136 -- 5.4.2 Numerischer Vergleich mittels PBCM 142 -- 5.4.3 Untersuchung anhand gemessener Übertragungskanäle 149 -- 5.5 Zusammenfassung zu Kapitel 5 154 -- 6 Messtechnische Analyse eines Subarray-basierten hybriden Beamformingsystems . 157 -- 6.1 Subarray-basierter hybrider Beamforming-Empfänger 157 -- 6.1.1 Systemdesign 158 -- 6.1.2 Kalibrierungsverfahren . 160 -- 6.2 Messtechnische Untersuchung der Kanalschätzungsverfahren 167 -- 6.2.1 Konstruktion und Vermessung hierarchischer Codebücher 167 -- 6.2.2 Messaufbau zur Untersuchung von Winkelschätzverfahren 170 -- 6.2.3 Trennbarkeit in Mehrwegeszenarien mittels hierarchischer Suchverfahren 171 -- 6.2.4 Winkelfehleranalyse der Kanalschätzungsverfahren in Mehrnutzerszenarien 174 -- 6.3 Zusammenfassung zu Kapitel 6 177 -- 7 Schlussfolgerungen 179 -- A Anhang zum MIMO-Kanalmesssystem . 183 -- A.1 HF-Frontend Design und Integration . 183 -- A.2 Berechnung des Azimutwinkels 185 -- A.3 Messszenarien 187 -- A.4 Metriken zur Kanalanalyse 188 -- A.5 Analyse des zeitlichen Verhaltens des Übertragungskanals 189 -- B Anhang zu den Kanalschätzungsmethoden 193 -- B.1 Beispiel von Sektorcodebüchern für lineare Antennenarrays . 193 -- B.2 Anfälligkeit des MSAM-Verfahrens auf Phasenänderungen 194 -- B.3 Richtcharakteristiken der hierarchischen Codebücher für -- 2D-Antennenarrays . 196 -- Literaturverzeichnis 199 -- Eigene Veröffentlichungen 235 -- Journalartikel . 235 -- Konferenzbeiträge 236. |
| Record Nr. | UNINA-9910591162703321 |
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Eisenbeis Jörg
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| Karlsruhe : , : KIT Scientific Publishing, , 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Identification of noise sources during rocket engine test firings and a rocket launch using a microphone phased-array / / Jayanta Panda, Robert N. Mosher, Barry J. Porter
| Identification of noise sources during rocket engine test firings and a rocket launch using a microphone phased-array / / Jayanta Panda, Robert N. Mosher, Barry J. Porter |
| Autore | Panda J (Jayanta) |
| Pubbl/distr/stampa | Moffett Field, CA : , : National Aeronautics and Space Administration, Ames Research Center, , December 2013 |
| Descrizione fisica | 1 online resource (20 pages) : color illustrations |
| Collana | NASA/TM |
| Soggetto topico |
Rocket engines
Phased arrays Test firing Aeroacoustics Beamforming Sound pressure |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910703411203321 |
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Panda J (Jayanta)
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| Moffett Field, CA : , : National Aeronautics and Space Administration, Ames Research Center, , December 2013 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Interferometer control of optical tweezers / / Arthur J. Decker
| Interferometer control of optical tweezers / / Arthur J. Decker |
| Autore | Decker Arthur J (Arthur John), <1941-> |
| Pubbl/distr/stampa | Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , June 2002 |
| Descrizione fisica | 1 online resource (8 pages) : illustrations |
| Collana | NASA/TM |
| Soggetto topico |
Interferometers
Light modulators Optical control Beamforming |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910705700903321 |
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Decker Arthur J (Arthur John), <1941->
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| Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , June 2002 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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ITG-Fb. 300: WSA 2021 : 25th International ITG Workshop on Smart Antennas 10-12 November 2021, French Riviera, Hybrid Event
| ITG-Fb. 300: WSA 2021 : 25th International ITG Workshop on Smart Antennas 10-12 November 2021, French Riviera, Hybrid Event |
| Edizione | [Neuerscheinung] |
| Pubbl/distr/stampa | Berlin, : VDE Verlag, 2021 |
| Descrizione fisica | Online-Ressource (475 S.) |
| Collana | ITG-Fachberichte |
| Soggetto topico |
Machine Learning
Wireless communication systems Beamforming Smart Antennas Wireless sensor networks Channel Modelling Cloud Radio Access Networks C-RAN (Cloud-RAN) Centralized-RAN Massive/Full-Dimension MIMO Network/Distributed MIMO Ultra-Low Latency Communications |
| ISBN |
1-5231-5480-2
3-8007-5688-9 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISA-996577925503316 |
| Berlin, : VDE Verlag, 2021 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
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ITG-Fb. 300: WSA 2021 : 25th International ITG Workshop on Smart Antennas 10-12 November 2021, French Riviera, Hybrid Event
| ITG-Fb. 300: WSA 2021 : 25th International ITG Workshop on Smart Antennas 10-12 November 2021, French Riviera, Hybrid Event |
| Edizione | [Neuerscheinung] |
| Pubbl/distr/stampa | Berlin, : VDE Verlag, 2021 |
| Descrizione fisica | Online-Ressource (475 S.) |
| Collana | ITG-Fachberichte |
| Soggetto topico |
Machine Learning
Wireless communication systems Beamforming Smart Antennas Wireless sensor networks Channel Modelling Cloud Radio Access Networks C-RAN (Cloud-RAN) Centralized-RAN Massive/Full-Dimension MIMO Network/Distributed MIMO Ultra-Low Latency Communications |
| ISBN |
1-5231-5480-2
3-8007-5688-9 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910873964303321 |
| Berlin, : VDE Verlag, 2021 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Power, avionics and software communication network architecture / / William D. Ivancic [and six others]
| Power, avionics and software communication network architecture / / William D. Ivancic [and six others] |
| Autore | Ivancic William D. |
| Pubbl/distr/stampa | Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , February 2014 |
| Descrizione fisica | 1 online resource (32 pages) : color illustrations |
| Collana | NASA/TM |
| Soggetto topico |
Communication networks
Extravehicular mobility units Video communication Beamforming International Space Station |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910703641303321 |
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Ivancic William D.
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| Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , February 2014 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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