Table of Contents

Intellectual Property Rights
Foreword
Foreword
Executive summary and recommendations
Introduction
Benefits
Performance
Risk areas
Codec development and selection
Recommendations
0 Scope
1 Goals of AMR codec
2 Terminology
3 Overview of the AMR system and its applications
   3.1 Basic operation
   3.2 Application scenarios
4 Development Time-scales
5 Baseline description and working assumptions
   5.1 Generic operation
   5.2 Constraints
   5.3 Speech and channel codecs
   5.4 Rate adaptation
   5.5 Support of TFO
   5.6 Support of DTX
   5.7 Support of 8 and 16 kbit/s A-ter sub-multiplexing
   5.8 Active noise suppression
6 Feasibility issues
   6.1 Codec performance
   6.2 Quality and Capacity benefits of AMR
   6.3 Codec adaptation
   6.4 Support of other features
   6.5 Wideband service option
7 Requirements specification
8 Implementation factors
9 Codec development and selection
   9.1 Test and selection methodologies
   9.2 Asymmetry of up and down links
   9.3 Speech traffic channel simulation model
   9.4 Schedule
   9.5 Programme management
10 Open issues and risks
11 Recommendations
Annex A: Terminology
Annex B: Application scenarios
Annex C: Codec requirement specification
      C.1 Static conditions
      C.2 Dynamic conditions
Annex D: AMR implementation requirements
      D.1 Network
      D.2 MS
Annex E: Speech traffic channel simulator
Annex F: Schedule for AMR development
Annex G: Work Item Description for AMR
Annex H (informative): Change history
History

Abstract

Provides the outcome of the Study Phase initiated at SMG#20 on the concept of the Adaptive Multi-Rate (AMR) codec.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	3GPP SA 4