Hasil Pencarian

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Hasil Pencarian

Ditemukan 10 dokumen yang sesuai dengan query
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Atika Rizkyutami Witjaksono
"Di era digital, internet sudah menjadi komoditas hidup bagi manusia, hingga PBB memutuskan bahwa konektivitas internet merupakan bagian dari hak asasi manusia, namun hingga saat ini, sekitar setengah dari penduduk dunia masih belum terhubung dengan koneksi internet, dan mereka yang belum terhubung ternyata tinggal di daerah rural, dimana penyelenggaraan internet konvensional membutuhkan biaya yang sangat tinggi. Teknologi TV Whitespace merupakan salah satu teknologi alternatif untuk menyediakan internet di daerah rural, dimana internet ditransmisikan pada spektrum frekuensi yang tidak dipakai. Skripsi ini membahas tentang teknologi TV Whitespace, standar yang digunakan yaitu standar IEEE 802.22 dan kebijakan dari FCC beserta analisisnya berdasarkan simulasi yang dilakukan di Indonesia. Analisis teknologi TV Whitespace pada skripsi ini dibagi menjadi dua, yaitu dari ketersediaan kanal maksimum dan analisis interferensi WSD terhadap DTT. Simulasi dilakukan di Pulau Bali yang sebagian dari kabupatennya masih merupakan daerah rural. Hasil simulasi menunjukkan bahwa ketersediaan kanal maksimum terbesar di Bali berada pada bagian barat dan WSD yang didesain di suatu area sampel di Bali tidak menginterferensi cakupan dari DTT yang sudah ada.

In the digital era, internet has become humanity rsquo s necessity, to the point where UN stated that internet connectivity is the right of human being. Unfortunately, half of the world population have not been connected to the internet yet, and studies found that those who haven rsquo t live in rural area, where traditional internet service will be very costly. TV Whitespace technology is one of the alternative to provide internet in rural areas, where internet is transmitted with unused frequency spectrum. This thesis explains about TV Whitespace rsquo s technology itself, existing standards, that is IEEE 802.22 standard and FCC rsquo s policy along with its analysis based on the simulation conducted in Indonesia. The TV Whitespace technology analysis in this thesis is divided into two the maximum channel availability and WSD interference toward DTT analysis. The simulation is conducted in Bali Island where some of its regencies are still categorized as rural areas. Simulation results show that the maximum channel availability in Bali is located at its western side and the WSDs designed in a certain sample area in Bali don rsquo t interfere with the already existing DTT rsquo s coverage.
"
Lengkap +
Depok: Fakultas Teknik Universitas Indonesia, 2017
S-Pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Anne Widiastri
"Cognitive radio merupakan teknologi telekomunikasi yang memberikan solusi untuk masalah keterbatasan ketersediaan sumber daya spektrum frekuensi dan rendahnya efisiensi penggunaan spektrum yang ada. Skripsi ini membahas rancang bangun antena yang sesuai untuk aplikasi cognitive radio yang dapat digunakan pada alokasi frekuensi 1,8 GHz dan 2,35 GHz. Rancang bangun antena terdiri dari dua antena printed monopole di atas substrat FR4 dengan menggunakan ground sebagian. Antena pertama berfungsi sebagai sensing antenna dengan karakteristik wideband dan memiliki pola radiasi omnidirectional. Antena kedua merupakan communicating antenna dimana pada struktur antena diberi switch sehingga antena ini dapat merekonfigurasi frekuensi kerja. Hasil pengukuran menunjukkan sensing antenna memiliki impedance bandwidth 5,197 GHz pada kondisi switch OFF dan impedance bandwidth 10,328 GHz pada kondisi switch ON yang diukur pada batas RL ≤ -10 dB. Sedangkan reconfigurable communicating antenna memiliki frekuensi kerja 2,35 GHz pada kondisi switch OFF dan frekuensi kerja 1,8 GHz pada kondisi switch ON.

Cognitive radio is technology developed nowadays to be the solution for limited frequency spectrum resource and inefficiency spectrum utilization issues. Design of antenna for cognitive radio application is proposed in this final project. The antenna is designed to work at 1.8 GHz and 2.35 GHz frequency allocation. The design consists of two printed monopole antenna printed over FR4 substrate sharing a common partial ground. The first antenna is the sensing antenna for spectrum sensing, having wideband characteristic and omnidirectional radiation pattern. The second one is the communicating antenna which is a frequency reconfigurable antenna with the existing switch on the antenna's structure so that the antenna will have two different working frequencies. The measurement shows that the sensing antenna has 5.197 GHz impedance bandwidth when the switch is OFF and 10.328 GHz impedance bandwidth when the switch is ON which is measured at return loss below -10 dB. While, the reconfigurable communicating antenna is working at 2.35 GHz when the switch is OFF and it is working at 1.8 GHz when the switch is ON."
Lengkap +
Depok: Fakultas Teknik Universitas Indonesia, 2011
S1036
UI - Skripsi Open  Universitas Indonesia Library
cover
"[This book provides a broad introduction to Cognitive radio, which attempts to mimic human cognition and reasoning applied to software defined radio and reconfigurable radio over wireless networks. It provides readers with significant technical and practical insights into different aspects of Cognitive radio, starting from a basic background, the principle behind the technology, the inter-related technologies and application to cellular and vehicular networks, the technical challenges, implementation and future trends. The discussion balances theoretical concepts and practical implementation. Wherever feasible, the different concepts explained are linked to application of the corresponding scheme in a particular wireless standard.;This book provides a broad introduction to Cognitive radio, which attempts to mimic human cognition and reasoning applied to software defined radio and reconfigurable radio over wireless networks. It provides readers with significant technical and practical insights into different aspects of Cognitive radio, starting from a basic background, the principle behind the technology, the inter-related technologies and application to cellular and vehicular networks, the technical challenges, implementation and future trends. The discussion balances theoretical concepts and practical implementation. Wherever feasible, the different concepts explained are linked to application of the corresponding scheme in a particular wireless standard., This book provides a broad introduction to Cognitive radio, which attempts to mimic human cognition and reasoning applied to software defined radio and reconfigurable radio over wireless networks. It provides readers with significant technical and practical insights into different aspects of Cognitive radio, starting from a basic background, the principle behind the technology, the inter-related technologies and application to cellular and vehicular networks, the technical challenges, implementation and future trends. The discussion balances theoretical concepts and practical implementation. Wherever feasible, the different concepts explained are linked to application of the corresponding scheme in a particular wireless standard.]"
Lengkap +
New York: [Springer, ], 2012
e20395592
eBooks  Universitas Indonesia Library
cover
"This book features research related to computational intelligence and energy and thermal aware management of computing resources. The authors publish original and timely research in current areas of power, energy, temperature, and environmental engineering as and advances in computational intelligence that are benefiting the fields. Topics include signal processing architectures, algorithms, and applications; biomedical informatics and computation; artificial intelligence and machine learning; green technologies in information; and more. The book includes contributions from a wide range of researchers, academicians, and industry professionals. The book is made up both of extended papers presented at the International Conference on Intelligent Computing and Sustainable System (ICICSS 2018), September 20-21, 2018, and other accepted papers on R&D and original research work related to the practice and theory of technologies to enable and support Intelligent Computing applications."
Lengkap +
Switzerland: Springer Nature, 2019
e20507355
eBooks  Universitas Indonesia Library
cover
Gao, Yue
"This SpringerBrief discusses the applications of spare representation in wireless communications, with a particular focus on the most recent developed compressive sensing (CS) enabled approaches. With the help of sparsity property, sub-Nyquist sampling can be achieved in wideband cognitive radio networks by adopting compressive sensing, which is illustrated in this brief, and it starts with a comprehensive overview of compressive sensing principles. Subsequently, the authors present a complete framework for data-driven compressive spectrum sensing in cognitive radio networks, which guarantees robustness, low-complexity, and security.
Particularly, robust compressive spectrum sensing, low-complexity compressive spectrum sensing, and secure compressive sensing based malicious user detection are proposed to address the various issues in wideband cognitive radio networks. Correspondingly, the real-world signals and data collected by experiments carried out during TV white space pilot trial enables data-driven compressive spectrum sensing. The collected data are analysed and used to verify our designs and provide significant insights on the potential of applying compressive sensing to wideband spectrum sensing.
This SpringerBrief provides readers a clear picture on how to exploit the compressive sensing to process wireless signals in wideband cognitive radio networks. Students, professors, researchers, scientists, practitioners, and engineers working in the fields of compressive sensing in wireless communications will find this SpringerBrief very useful as a short reference or study guide book. Industry managers, and government research agency employees also working in the fields of compressive sensing in wireless communications will find this SpringerBrief useful as well."
Lengkap +
Switzerland: Springer Cham, 2019
e20502870
eBooks  Universitas Indonesia Library
cover
Chakraborty, Tamal
"This book offers an accessible introduction and practical guide to Voice over Internet Protocol (VoIP) technology, providing readers with the know-how to solve the problems encountered in applying VoIP technology across all types of network. It incorporates the latest research findings and brings readers up to date with the challenges that are faced by researchers developing novel applications of VoIP.
The authors discuss the general architecture of VoIP technology, along with its application and relevance in conventional and emerging wireless communication networks, including Wireless Local Area Networks (WLANs), Worldwide Interoperability for Microwave Access (WiMAX), Long Term Evolution (LTE) and Cognitive Radio Networks. The book also includes Quality of service (QoS) studies under dynamic and unpredictable network conditions, which examine the reliability of both legacy systems And the upcoming pervasive computing systems. Further, it explains how the heuristic-based learning algorithms that are used in VoIP communications may help develop today’s technology in the area of autonomous systems.
This book is a valuable source of information for academics and researchers, as it provides state-of-theart research in VoIP technology. It is also of interest to network designers, application architects, and service providers looking for a coherent understanding of VoIP across a wide range of devices, network applications and user categories."
Lengkap +
Switzerland: Springer Cham, 2019
e20502223
eBooks  Universitas Indonesia Library
cover
"Wireless networking technologies are witnessed to become the integral part of industry, business, entertainment and daily life. Encyclopedia of Wireless Networks is expected to provide comprehensive references to key concepts of wireless networks, including research results of historical significance, areas of current interests, and growing directions in the future wireless networks. It can serve as a valuable and authoritative literature for students, researchers, engineers, and practitioners who need a quick reference to the subjects of wireless network technology and its relevant applications. "
Switzerland: Springer Cham, 2019
e20503330
eBooks  Universitas Indonesia Library
cover
"This SpringerBrief mainly focuses on effective big data analytics for CPS, and addresses the privacy issues that arise on various CPS applications. The authors develop a series of privacy preserving data analytic and processing methodologies through data driven optimization based on applied cryptographic techniques and differential privacy in this brief. This brief also focuses on effectively integrating the data analysis and data privacy preservation techniques to provide the most desirable solutions for the state-of-the-art CPS with various application-specific requirements.
"
Lengkap +
Switzerland: Springer Nature, 2019
e20507021
eBooks  Universitas Indonesia Library
cover
"This major reference work provides the most up-to-date research advances and theories in cognitive radio technology, from cognitive radio principles and theory to cognitive radio standards and systems, from fundamental limits of cognitive radio channels to cognitive radio networks, from the current cognitive radio practices and examples to future 5G cognitive cellular networks. This handbook will include some emerging applications of cognitive radio in areas such as smart grid, internet-of-things, big data, small cell/heterogeneous networks, and in 5G. The potential readers include postgraduate students, academic staff, telecommunications engineering, spectrum policy makers, and industry entrepreneurs."
Singapore: Springer Nature, 2019
e20508913
eBooks  Universitas Indonesia Library
cover
Gui, Guan
"This SpringerBrief introduces the basics of wireless powered communication networks (WPCNs). In particular, the background and concept of WPCNs are briefly discussed. Moreover, this brief provides an extensive study of the recent developments in this area from an optimization perspective. Wireless powered communication network (WPCN) is a new network paradigm for IoT, where wireless devices (WDs) are powered by radio frequency (RF) based wireless power transfer (WPT) to eliminate the need for recharging or replacing the batteries manually and to prolong their lifetime.In this context, the brief also discusses some optimization problems for state-of-the-art scenarios of wireless powered communication networks.
The target audiences for this SpringerBrief are researchers, engineers, and undergraduate and graduate-level students, who are studying or working in wireless powered communication networks and its performance optimization."
Lengkap +
Switzerland: Springer Cham, 2019
e20502878
eBooks  Universitas Indonesia Library