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Ditemukan 11935 dokumen yang sesuai dengan query
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"This book is unique in presenting channels, techniques and standards for the next generation of MIMO wireless networks. Through a unified framework, it emphasizes how propagation mechanisms impact the system performance under realistic power constraints. Combining a solid mathematical analysis with a physical and intuitive approach to space-time signal processing, the book progressively derives innovative designs for space-time coding and precoding as well as multi-user and multi-cell techniques, taking into consideration that MIMO channels are often far from ideal.
Reflecting developments since the first edition was published, this book has been thoroughly revised, and now includes new sections and five new chapters, respectively dealing with receiver design, multi-user MIMO, multi-cell MIMO, MIMO implementation in standards, and MIMO system-level evaluation.
"
Oxford, UK: Academic Press, 2013
e20427294
eBooks  Universitas Indonesia Library
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Andri Hendrawan
"Perkembangan teknologi pada perangkat elektronik portable seperti smart phone dan Personal Digital Assistant (PDA) telah menghadirkan fitur multimedia pada perangkat tersebut. Perkembangan fitur multimedia pada perangkat tersebut, memungkinkan terjadinya komunikasi Video Conference. Dengan diciptakannya wireless LAN yang mendukung mobilitas user, komunikasi tersebut menjadi lebih fleksibel dalam hal ruang dan tempat. Komunikasi Video Conference merupakan sebuah bagian pendukung dari Third Generation mobile-system (3G) yang saat ini telah diterapkan di jepang dan dibeberapa beberapa negara di eropa. Aplikasi Live Video Streaming merupakan aplikasi pendukung dari fitur komunikasi Video Conference tersebut.
Pada dasarnya aplikasi Live Video Streaming merupakan komunikasi satu arah yang terjadi antara server dengan para client. Server berfungsi sebagai pusat perekaman gambar video secara langsung (live). Informasi yang direkam kemudian diolah menjadi bentuk yang sesuai untuk proses transmisi lalu dikirimkan ke client. Client menerima informasi yang dikirimkan server kemudian menampilkan informasi tersebut pada layar perangkat elektronik portable seperti Personal Digital Assistant (PDA).
Hasil evaluasi optimalisasi dan performa aplikasi menunjukkan bahwa konfigurasi optimal untuk format video H.263 terjadi pada resolusi 176x144 pixel. Hasil data pengujian pada resolusi 176x144 memiliki rata-rata persentase packet loss sekitar 1 %, waktu start transmission delay kurang dari 4 detik dan stop transmission delay sekitar 2 detik. Tampilan gambar video pada layar client cukiip baik dan nyaman untuk dilihat. Hasil data pengujian memperlihatkan bahwa semakin besar resolusi media yang dikirimkan maka semakin besar persentase packet loss dan transmission delay."
Depok: Fakultas Teknik Universitas Indonesia, 2006
S40753
UI - Skripsi Membership  Universitas Indonesia Library
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"This book covers issues related to 5G network security. The authors start by providing details on network architecture and key requirements. They then outline the issues concerning security policies and various solutions that can handle these policies. Use of SDN-NFV technologies for security enhancement is also covered. The book includes intelligent solutions by utilizing the features of artificial intelligence and machine learning to improve the performance of the 5G security protocols and models. Optimization of security models is covered as a separate section with a detailed information on the security of 5G-based edge, fog, and osmotic computing. This book provides detailed guidance and reference material for academicians, professionals, and researchers.
Presents extensive information and data on research and challenges in 5G networks; Covers basic architectures, models, security frameworks, and software-defined solutions for security issues in 5G networks; Provides solutions that can help in the growth of new startups as well as research directions concerning the future of 5G networks."
Switzerland: Springer Nature , 2019
e20505365
eBooks  Universitas Indonesia Library
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"[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.]"
New York: [Springer, ], 2012
e20395592
eBooks  Universitas Indonesia Library
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Wei, Song
"Interworking of Wireless LANs and Cellular Networks focuses on three aspects, namely access selection, call admission control and load sharing to investigate heterogeneous interworking for cellular/WLAN integrated networks. It not only reveals important observations but also offers useful tools for performance evaluation. The unique traffic and network characteristics are exploited to enhance interworking effectiveness. Theoretical analysis and simulation validation demonstrate benefits of cellular/WLAN interworking in real networks. Last but not the least, this brief highlights promising future research directions to guide interested readers."
New York: Springer, 2012
e20407795
eBooks  Universitas Indonesia Library
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"Layanan sistem komukisasi wireless yang berkembang semakin pesat berpengaruh pada kebutuhan lebar pita frekuensi pelanggan sistem wireless sehingga membutuhkan pita frekuensi yang lebar. sistem MIMO merupakan salah satu solusi yang bisa memenuhi kebutuhan ini. nkapasitas kanal juga dipengaruhi oleh korelasi antar elemen antena MIMO
"
384 JURTEL 10:2 (2005)
Artikel Jurnal  Universitas Indonesia Library
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Lee, William C. Y.
New York: McGraw-Hill, 1995
621.384 LEE m (1)
Buku Teks  Universitas Indonesia Library
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Lee, William C. Y.
New York: McGraw-Hill , 1989
621.384 5 LEE m (1)
Buku Teks  Universitas Indonesia Library
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Huang, Howard
"MIMO communication for cellular networks describes single-user, multiuser, network MIMO technologies and system-level aspects of cellular networks, including channel modeling, resource scheduling, interference mitigation, and simulation methodologies. The key concepts are presented with sufficient generality to be applied to a wide range of wireless systems, including those based on cellular standards such as LTE, LTE-Advanced, WiMAX, and WiMAX2. "
New York: [, Springer], 2012
e20418821
eBooks  Universitas Indonesia Library
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Shankar, P. Mohana
"The book presents a comprehensive view of channel degradation arising from fading and shadowing. Various statistical models including simple, hybrid, compound, complex and cascaded ones are presented with detailed derivations along with measures to quantify the deterioration such as the amount of fading, error rates and outage probabilities. The models range from the Rayleigh and Rician through Suzuki, generalized K, cascaded and alpha-mu and similar ones. This is followed by the analysis of mitigation of fading and shadowing through diversity (simple, hybrid, micro- and macro- level) and combining algorithms. The density and distribution functions, error rates and outages are derived and results analyzed to quantify the improvements. The effects of co-channel interference before and after the implementation of diversity are also analyzed. To facilitate easy understanding of the models and analysis, the background information in terms of probability and random variables is presented with relevant derivations of densities of linear and nonlinear transformation of random variables, the sums, products, ratios as well as order statistics of random variables of all types. The book also provides material on digital modems of interest in wireless systems. Thus, the book with 1100+ equations and 350+ Matlab generated figures and tables is an ideal source for students, educators, researchers and professionals in wireless communications allowing access to information currently unavailable."
New York: Springer, 2012
e20425731
eBooks  Universitas Indonesia Library
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