Fundamentals of Voice-Quality Engineering in Wireless Networks

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  • Format: Paperback
  • Copyright: 2012-09-13
  • Publisher: Cambridge Univ Pr
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Network operators are faced with the challenge of maximizing the quality of voice transmissions in wireless communications without impairing speech or data transmission. This book provides a comprehensive survey of voice quality algorithms, features, interactions, and trade-offs, at the device and system level. Using a practitioner rather than algorithm-designer angle, this book is unique. It elaborates on the root cause of impairments and ways for resolving them, as well as methodologies for measuring and quantifying voice quality before and after applying the remedies. The key issues are exemplified using case studies. Avoiding complex mathematics, the approach is based on real and sizable field experience supported by scientific and laboratory analysis. This title is suitable for practitioners in the wireless communications industry and graduate students in electrical engineering. Further resources for this title including a range of audio examples will be available online at www.cambridge.org/9780521855952.

Table of Contents

Voice Quality Foundations
An overview of voice coding architectures in wireless communications
Quantitative assessment of voice quality
Electrical echo and echo cancellation
Acoustic echo and its control
Noisy ambience, mobility, and noise reduction
Speech level control
Wireless Architectures
Mobile-to-mobile stand-alone VQS architectures and their implications on data communications
The VQS evolution to 3G
A Network Operator Guide for Selecting, Appraising, and Testing VQS
A network operator guide to testing and appraising voice quality systems
Service provider's system, management, and delivery, requirements
Making economically sound investment decisions concerning voice quality systems
Managing the Network
Trouble shooting and case studies
Afterthoughts and Some Fresh Ideas
Tracer probe
My sound
A procedure for evaluating and contrasting new wireless codecs performance with and without VQS
The theory of sleep
Audio illustrations
Glossary of common voice quality systems terminology
Table of Contents provided by Publisher. All Rights Reserved.

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