Assessment and Prediction of Speech Quality in Telecommunications, Sebastian M?ller
Автор: Alexander Raake Название: Speech Quality of VoIP: Assessment and Prediction ISBN: 0470030607 ISBN-13(EAN): 9780470030608 Издательство: Wiley Рейтинг: Цена: 17733.00 р. Наличие на складе: Поставка под заказ.
Описание: Finally a comprehensive overview of speech quality in VoIP from the user`s perspective! Speech Quality of VoIP is an essential guide to assessing the speech quality of VoIP networks, whilst addressing the implications for the design of VoIP networks and systems.
Автор: Ilyas Название: The Handbook of Optical Communication Networks ISBN: 0849313333 ISBN-13(EAN): 9780849313332 Издательство: Taylor&Francis Рейтинг: Цена: 33686.00 р. Наличие на складе: Поставка под заказ.
Описание: Presents comprehensive information on integrated optical networks. This book provides technical information on various aspects of these networks, from their basic concepts to research-grade material, including future trends. It includes chapters that discuss transmission and switching, networking architectures, and traffic management.
Описание: Evolving network topologies and complex operational models require a new, more sophisticated approach to reliability and availability prediction in telecommunications systems.
Автор: Yacoub Название: Foundations of Mobile Radio Engineering ISBN: 0849386772 ISBN-13(EAN): 9780849386770 Издательство: Taylor&Francis Рейтинг: Цена: 33686.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: A comprehensive survey covering the main topics of mobile radio systems. It considers concepts including the theory of patterns and symmetry and how it impacts hexagonal cell tessellation, long-term fading and log-normal distribution, short-term fading and Rayleigh distribution, indoor propagation and Rice distribution, and Suzuki distribution.
Автор: Sims Название: Understanding Spectrum Liberalisation ISBN: 1498705022 ISBN-13(EAN): 9781498705028 Издательство: Taylor&Francis Рейтинг: Цена: 12554.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Until the 1990s, almost all spectrum licenses were given away practically for free--even the first mobile licenses which laid the foundation for multi-billion dollar companies that dominate stock markets around the world. In the past fifteen years, there has been a concerted attempt to liberalise the sector and make it more open to market forces. This book examines this attempt. Exploring the new frontier for spectrum policy, Understanding Spectrum Liberalisation identifies the successes and failures of the main policy initiatives of the past decade. It explains, in layman's terms, the technical and policy background needed to understand these debates. For those already working in the field, the book provides a lively analysis of recent policy initiatives along with an authoritative interpretation of the latest developments in spectrum policy. It examines individual liberalisation initiatives in detail and explains the logic behind moves towards spectrum sharing, which is seen as the next policy phase. This book will help non-specialists climb the formidable learning curve quickly. It is ideal for those who have just become involved in the spectrum field, whether in industry, government, or as a regulator, as well as those with expertise in one area of spectrum management who want to learn more about the other areas. History is about the concerns of the present, so the saying goes, and the authors hope that their interpretation of the very recent past will stimulate debate about future policy and help you make substantive contributions to ongoing policy debates.
Описание: Introduction.- Audiovisual quality for interactive communication.- Interactive model framework.- Extension of auditory and visual quality estimation functions for videotelephony.- Audiovisual integration for call quality.- Temporal integration for audiovisual call quality.- Conclusion.
Описание: Introduction.- Audiovisual quality for interactive communication.- Interactive model framework.- Extension of auditory and visual quality estimation functions for videotelephony.- Audiovisual integration for call quality.- Temporal integration for audiovisual call quality.- Conclusion.
Автор: F.A. Westall; R.D. Johnston; A.V. Lewis Название: Speech Technology for Telecommunications ISBN: 0412790807 ISBN-13(EAN): 9780412790805 Издательство: Springer Рейтинг: Цена: 41787.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: From an introduction to the basic terminology and underlying techniques, this book demonstrates the core enabling technologies, with a broad perspective given for various topics. It focuses on the applications and gives an insight into the process of integrating a range of speech technologies for commercial solutions to customer needs.
Описание: This volume examines ways of measuring the perceived quality of transmitted speech. It covers WB-PESQ, or wideband-perceptual speech evaluation, as well as the new diagnostic-instrumental method (DIAL), which includes perceptual and cognitive elements.
Автор: Hu Название: Multimedia over Cognitive Radio Networks ISBN: 1482214857 ISBN-13(EAN): 9781482214857 Издательство: Taylor&Francis Рейтинг: Цена: 19140.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
With nearly 7 billion mobile phone subscriptions worldwide, mobility and computing have become pervasive in our society and business. Moreover, new mobile multimedia communication services are challenging telecommunication operators. To support the significant increase in multimedia traffic--especially video--over wireless networks, new technological infrastructure must be created. Cognitive Radio Networks (CRNs) are widely regarded as one of the most promising technologies for future wireless communications. This book explains how to efficiently deliver video, audio, and other data over CRNs.
Covering advanced algorithms, protocols, and hardware-/software-based experiments, this book describes how to encode video in a prioritized way to send to dynamic radio links. It discusses different FEC codes for video reliability and explains how different machine learning algorithms can be used for video quality control. It also explains how to use readily available software tools to build a CRN simulation model.
This book explains both theoretical and experimental designs. It describes how universal software radio peripheral (USRP) boards can be used for real-time, high-resolution video transmission. It also discusses how a USRP board can sense the spectrum dynamics and how it can be controlled by GNU Radio software. A separate chapter discusses how the network simulator ns-2 can be used to build a simulated CRN platform.
ООО "Логосфера " Тел:+7(495) 980-12-10 www.logobook.ru
