Hasil Pencarian  ::  Simpan CSV :: Kembali

"[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.]"

"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."

"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."

"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."

"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."

"This book introduces Radio Frequency Cell Site Engineering to a broad audience. The author blends theory and practice to bring readers up-to-date in key concepts, underlying principles and practical applications of wireless communications. The presentation is designed to be easily accessible, minimizing mathematics and maximizing visuals."

"This book explores the future of mobile communications networks given the increasing demands for services and higher quality, as well as the continued growth in the cellular mobile marketplace and the new private mobile radio systems. These demands will impact on the developments that are likely to occur in the near future which will continue to drive forward the technological capabilities.This book investigates the implications of increasing mobile customer numbers on a global scale and the convergence of mobile and the internet, which, it is envisaged, will provide the next massive growth burst to the mobile market and 3G networks. It will be essential reading for communications engineers and managers who need to understand the expanding market expectations and the technological solutions available in this dynamic field."

"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."