Relatórios técnicos

402, 2021

Sistemas de Comunicações

Título 5G
Resumo 5G should deliver significantly increased operational performance (e.g. increased spectral efficiency, higher data rates, low latency), as well as superior user experience (near to fixed network but offering full mobility and coverage). 5G needs to cater for massive deployment of Internet of Things, while still offering acceptable levels of energy consumption, equipment cost and network deployment and operation cost. It needs to support a wide variety of applications and services
Fonte European Telecommunications Standards Institute (ETSI)
Origem Internacional
Autor/Editor European Telecommunications Standards Institute (ETSI)
Disponibilidade Disponível online
Endereço https://www.etsi.org
/technologies/mobile/5g
Referência
Data Outubro 2024
Título 4th Generation (LTE)
Resumo UTRA (Universal Terrestrial Radio Access) as a 3rd generation system, with the enhancements provided by High Speed Packet Access (HSPA), for both downlink and uplink, will remain highly competitive for several years. Nevertheless, the industry that has developed the 3GPP technologies, launched a project in Dec. 2004 called Long Term Evolution (LTE) to study requirements for a new air interface called Evolved UTRA (E-UTRA).
Fonte European Telecommunications Standards Institute (ETSI)
Origem Internacional
Autor/Editor European Telecommunications Standards Institute (ETSI)
Disponibilidade Disponível online
Endereço https://www.etsi.org
/technologies/mobile/4g
Referência
Data Outubro 2024
Título 3rd Generation (UMTS)
Resumo Capacity limitations of 2nd generation mobile communication systems, an increasing demand for the support multimedia services (not mainly voice) and higher data rates as well as the request for a world wide mobile communication system triggered the introduction of a 3rd generation under the ITU-R umbrella IMT-2000. Among the terrestrial systems of IMT-2000 family the most successful 3rd generation mobile cellular technology was developed by 3GPPTM under the name Universal Mobile Telecommunications System (UMTS).
Fonte European Telecommunications Standards Institute (ETSI)
Origem Internacional
Autor/Editor European Telecommunications Standards Institute (ETSI)
Disponibilidade Disponível online
Endereço https://www.etsi.org
/technologies/mobile/3g
Referência
Data Outubro 2024
Título 2nd Generation (GERAN)
Resumo The capacity limitations, the quality issues and the limitations to rather national mobile communication standards of the first analogue mobile communication systems led to the development of a 2nd generation of digital cellular mobile communication systems. ETSI SMG developed with GSM (Global System for Mobile Communications) a second-generation digital cellular radio access technology for Europe that became a worldwide success and that is still operating today.
Fonte
European Telecommunications Standards Institute (ETSI)
Origem Internacional
Autor/Editor
European Telecommunications Standards Institute (ETSI)
Disponibilidade Disponível online
Endereço https://www.etsi.org
/technologies/mobile/2g
Referência
Data Outubro 2024
Título 5G NR, The Next Generation Wireless Access Technology
Resumo 5G NR: The Next Generation Wireless Access Technology, Second Edition, follows the authors’ highly celebrated books on 3G and 4G and provides a new level of insight into 5G NR. After background discussion of 5G, including requirements, spectrum aspects, and the standardization timeline, all technology features of the first phase of NR are described in detail. The book covers the NR physical-layer structure and higher-layer protocols, RF and spectrum aspects, and co-existence and interworking with LTE. The book provides a good foundation in NR and different NR technology components, giving insight into why a certain solution has been selected.
Fonte Elsevier
Origem Reino Unido
Autor/Editor Erik Dahlman, Stefan Parkvall, Johan Skold
Disponibilidade Disponível por encomenda
Endereço https://www.elsevier.com/books/
5g-nr/dahlman/978-0-12-822320-8
Referência Academic Press, London, UK
Data Setembro 2020
Título WCDMA for UMTS: HSPA Evolution and LTE, 5th Edition
Resumo Written by the leading experts in the field, the best selling book on UMTS is now updated to cover 3GPP High Speed Packet Access (HSPA) evolution (HSPA+) in Release 7 and on-going Long Term Evolution (LTE) activity for Release 8. These technologies enhance the capabilities of the existing WCDMA/HSPA networks to offer higher data rates beyond 100Mbps. WCDMA for UMTS, Fourth Edition also covers 3GPP WCDMA Release 99, High Speed Downlink Packet Access (HSDPA) in Release 5 and High Speed Uplink Packet Access (HSUPA) in Release 6, whih are already deployed commercially. Multimedia Broadcast Multicast System (MBMS) is also described in detail.
Fonte John Wiley
Origem Reino Unido
Autor/Editor H. Holma, A. Toskala
Disponibilidade Disponível por encomenda
Endereço https://onlinelibrary.wiley.com/
doi/book/10.1002/9780470669501
Referência John Wiley, Chichester, UK
Data Agosto 2010
Título LTE for UMTS: OFDMA and SC-FDMA Based Radio Access
Resumo From the editors of the highly successful WCDMA for UMTS, this new book gives a complete and up-to-date overview of Long Term Evolution (LTE) in a systematic and clear manner. It starts with an in-depth explanation of the background and standardization process before moving on to examine the system architecture evolution (SAE). The basics of air interface modulation choices are introduced and key subjects such as 3GPP LTE physical layer and protocol solutions are described. Mobility aspects and radio resource management together with radio and end-to-end performance are assessed. The voice solution and voice capacity in LTE are also illustrated. Finally, the main differences between LTE TDD and FDD modes are examined and HSPA evolution in 3GPP Releases 7 and 8 is described. LTE for UMTS is one of the first books to provide a comprehensive guide to the standards and technologies of LTE. Key features of the book include: covers all the key aspects of LTE in a systematic manner; presents full description of 3GPP Release 8 LTE; examines the expected performance of LTE. Written by experts actively involved in the 3GPP standards and product development.
Fonte Wiley
Origem Reino Unido
Autor/Editor Erik Dahlman, Stefan Parkvall, Johan Skold
Disponibilidade Disponível por encomenda
Endereço https://www.wiley.com/en-us/
LTE+for+UMTS%3A+OFDMA+and+SC+FDMA+Based+Radio
+Access-p-9780470745472
Referência Academic Press, London, UK
Data Abril 2009
Título American National Standard Recommended Practice for an On-Site, Ad Hoc Test Method for Estimating Electromagnetic Immunity of Medical Devices to Radiated Radio-Frequency (RF) Emissions from RF Transmitters
Resumo A guide to evaluating electromagnetic immunity of medical devices against radiated radio-frequency (RF) emissions from common RF transmitters is provided in this recommended practice (e.g., two-way radios; walkie-talkies; mobile phones; wireless-enabled tablets, e-readers, laptop computers, and similar devices; RFID readers; networked mp3 players; two-way pagers; and wireless personal digital assistants [PDAs]). A comprehensive test or a guarantee is not provided by this protocol but, instead, a basic evaluation is given that can help identify medical devices that might be particularly vulnerable to interference from common RF transmitters.
Fonte Institute of Electrical and Electronics Engineers (IEEE) – International Committee on Electromagnetic Safety (SCC39)
Origem Estados Unidos da América
Autor/Editor IEEE – Committee on Electromagnetic Compatibility
Disponibilidade Disponível por encomenda
Endereço https://ieeexplore.ieee.org/document/6840284
Referência ANSI C63.18-2014
Data Junho 2014
Título Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequency fields from hand-held and body-worn wireless communication devices – Part 1528: Human models, instrumentation and procedures (Frequency range of 4 MHz to 10 GHz)
Resumo IEC/IEEE 62209-1528:2020 specifies protocols and test procedures for the reproducible and repeatable measurement of the conservative exposure peak spatial average SAR (psSAR) induced inside a simplified model of the head and the body by radio-frequency (RF) transmitting devices, with a defined measurement uncertainty. These protocols and procedures apply to a significant majority of the population, including children, during the use of hand-held and body-worn wireless communication devices. These devices include single or multiple transmitters or antennas, and are operated with their radiating structure(s) at distances up to 200 mm from a human head or body. This document is employed to evaluate SAR compliance of different types of wireless communication devices used next to the ear, in front of the face, mounted on the body, operating in conjunction with other RF-transmitting, non-transmitting devices or accessories (e.g. belt-clips), or embedded in garments. The applicable frequency range is from 4 MHz to 10 GHz. Devices operating in the applicable frequency range can be tested using the phantoms and other requirements defined in this document. The device categories covered include, but are not limited to, mobile telephones, cordless microphones, and radio transmitters in personal, desktop and laptop computers, for multi band operations using single or multiple antennas, including push-to-talk devices. This document can also be applied for wireless power transfer devices operating above 4 MHz.
Fonte International Electrotechnical Commission (IEC) / Institute of Electrical and Electronics Engineers (IEEE)
Origem Internacional
Autor/Editor TC 106
Disponibilidade Disponível por encomenda
Endereço https://webstore.iec.ch/publication/62753
Referência IEC/IEEE 62209-1528:2020
Data Outubro 2020
Título Diretiva 2014/30/UE do Parlamento Europeu e do Conselho de 26 de fevereiro de 2014 relativa à harmonização da legislação dos Estados-Membros respeitante à compatibilidade eletromagnética (reformulação)
Resumo A presente diretiva regulamenta a compatibilidade eletromagnética dos equipamentos e tem como objetivo assegurar o funcionamento do mercado interno, exigindo que os equipamentos cumpram um nível adequado de compatibilidade eletromagnética.
Fonte Conselho da União Europeia/Parlamento Europeu
Origem Europa
Autor/Editor Conselho da União Europeia/Parlamento Europeu
Disponibilidade Disponível online
Endereço https://eur-lex.europa.eu
/legal-content/PT/TXT/PDF/?uri=CELEX:32014L0030
Referência Jornal Oficial da União Europeia, L 96/79, de 29/3/2014 (2014/30/EU)
Data Fevereiro 2014
Título WCDMA for UMTS: HSPA Evolution and LTE, 5th Edition
Resumo Written by the leading experts in the field, the best selling book on UMTS is now updated to cover 3GPP High Speed Packet Access (HSPA) evolution (HSPA+) in Release 7 and on-going Long Term Evolution (LTE) activity for Release 8. These technologies enhance the capabilities of the existing WCDMA/HSPA networks to offer higher data rates beyond 100Mbps. WCDMA for UMTS, Fourth Edition also covers 3GPP WCDMA Release 99, High Speed Downlink Packet Access (HSDPA) in Release 5 and High Speed Uplink Packet Access (HSUPA) in Release 6, whih are already deployed commercially. Multimedia Broadcast Multicast System (MBMS) is also described in detail.
Fonte John Wiley
Origem Reino Unido
Autor/Editor H. Holma, A. Toskala
Disponibilidade Disponível por encomenda
Endereço https://onlinelibrary.wiley.com/
doi/book/10.1002/9780470669501
Referência John Wiley, Chichester, UK
Data Agosto 2010
2020-02-10T10:37:36+00:00
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