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Packet voice rate adaptation through perceptual frame discarding

Praestholm, Steffen; Schwefel, Hans-Peter and Andersen, Sören Vang LU (2007) IEEE Global communications conference (Globecom), 2007 In GLOBECOM 2007: 2007 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-11 p.2497-2502
Abstract
We address the problem of rate adaptation at the Source, given a congested packet based voice carrying network. We propose and analyze a novel method for perceptually based frame discarding. Thus, we propose a Perceptually Based Classifier (PBC) to do the discarding and we combine the PBC with a method for state synchronization, which exploits the knowledge of frame discards to combat the error propagation normally following a frame loss for state dependent coders. We further propose to use a combination of a queue model and an empirical speech quality model to decide on the proper discard rate for a given congestion scenario. In this design, we particularly focus on the queue model's ability to capture the characteristics of bursty... (More)
We address the problem of rate adaptation at the Source, given a congested packet based voice carrying network. We propose and analyze a novel method for perceptually based frame discarding. Thus, we propose a Perceptually Based Classifier (PBC) to do the discarding and we combine the PBC with a method for state synchronization, which exploits the knowledge of frame discards to combat the error propagation normally following a frame loss for state dependent coders. We further propose to use a combination of a queue model and an empirical speech quality model to decide on the proper discard rate for a given congestion scenario. In this design, we particularly focus on the queue model's ability to capture the characteristics of bursty traffic from voice sources in discontinuous transmission mode. Frame discarding is evaluated in a network bottleneck scenario, where objective results, based on PESQ-LQO, show significant improvements due to perceptually based frame discarding. The improvement depends on the degree of congestion without rate adaptation, the number of incoming voice flows, and the bottleneck buffer. (Less)
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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
GLOBECOM 2007: 2007 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-11
pages
2497 - 2502
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Global communications conference (Globecom), 2007
external identifiers
  • wos:000257505702085
  • scopus:39349095459
ISSN
1930-529X
language
English
LU publication?
no
id
8ecb2e3c-1af9-405b-9853-0b2e742d18dd (old id 4092502)
date added to LUP
2013-10-17 10:56:09
date last changed
2017-10-01 04:43:45
@inproceedings{8ecb2e3c-1af9-405b-9853-0b2e742d18dd,
  abstract     = {We address the problem of rate adaptation at the Source, given a congested packet based voice carrying network. We propose and analyze a novel method for perceptually based frame discarding. Thus, we propose a Perceptually Based Classifier (PBC) to do the discarding and we combine the PBC with a method for state synchronization, which exploits the knowledge of frame discards to combat the error propagation normally following a frame loss for state dependent coders. We further propose to use a combination of a queue model and an empirical speech quality model to decide on the proper discard rate for a given congestion scenario. In this design, we particularly focus on the queue model's ability to capture the characteristics of bursty traffic from voice sources in discontinuous transmission mode. Frame discarding is evaluated in a network bottleneck scenario, where objective results, based on PESQ-LQO, show significant improvements due to perceptually based frame discarding. The improvement depends on the degree of congestion without rate adaptation, the number of incoming voice flows, and the bottleneck buffer.},
  author       = {Praestholm, Steffen and Schwefel, Hans-Peter and Andersen, Sören Vang},
  booktitle    = {GLOBECOM 2007: 2007 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-11},
  issn         = {1930-529X},
  language     = {eng},
  pages        = {2497--2502},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Packet voice rate adaptation through perceptual frame discarding},
  year         = {2007},
}