Optimized unequal error protection for voice over IP

Mingyu Chen, Manohar Murthi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Citations (Scopus)

Abstract

In Voice over IP, typical Forward Error Correction (FEC) schemes to combat packet loss allocate an equal amount of error-control resources to each voice packet, regardless of the perceptual importance of a packet. Recognizing the unequal perceptual importance of voice packets, we propose signal-adaptive unequal error protection methods in which certain packets are allocated more error-control resources than others. In particular, the amount of error protection provided to a packet is determined through an analysis by expected decoder synthesis paradigm ensconced within a rate-distortion Lagrangian optimization framework. Therefore, the sender evaluates various protection policies by anticipating the behavior of the decoder's Packet Loss Concealment (PLC) algorithm for various loss event probabilities. In this manner, perceptually critical voice packets that cannot be easily replaced by a PLC are provided with greater error protection. For a given average bit-rate, a simple unequal error protection scheme provides a 0.2 to 0.3 advantage in PESQ-MOS over the conventional equal error control schemes.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume5
StatePublished - 2004
EventProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada
Duration: May 17 2004May 21 2004

Other

OtherProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing
CountryCanada
CityMontreal, Que
Period5/17/045/21/04

Fingerprint

Packet loss
decoders
resources
Forward error correction
combat
optimization
synthesis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics

Cite this

Chen, M., & Murthi, M. (2004). Optimized unequal error protection for voice over IP. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (Vol. 5)

Optimized unequal error protection for voice over IP. / Chen, Mingyu; Murthi, Manohar.

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 5 2004.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chen, M & Murthi, M 2004, Optimized unequal error protection for voice over IP. in ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. vol. 5, Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing, Montreal, Que, Canada, 5/17/04.
Chen M, Murthi M. Optimized unequal error protection for voice over IP. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 5. 2004
Chen, Mingyu ; Murthi, Manohar. / Optimized unequal error protection for voice over IP. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 5 2004.
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