The Experts below are selected from a list of 53295 Experts worldwide ranked by ideXlab platform

Pierre Duhamel - One of the best experts on this subject based on the ideXlab platform.

  • Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

  • ICASSP - Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010 IEEE International Conference on Acoustics Speech and Signal Processing, 2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

Xucen Huang - One of the best experts on this subject based on the ideXlab platform.

  • Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

  • ICASSP - Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010 IEEE International Conference on Acoustics Speech and Signal Processing, 2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

Olivier Derrien - One of the best experts on this subject based on the ideXlab platform.

  • Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

  • ICASSP - Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010 IEEE International Conference on Acoustics Speech and Signal Processing, 2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

Michel Kieffer - One of the best experts on this subject based on the ideXlab platform.

  • Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

  • ICASSP - Robust critical data recovery for MPEG-4 AAC encoded bitstreams
    2010 IEEE International Conference on Acoustics Speech and Signal Processing, 2010
    Co-Authors: Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
    Abstract:

    This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.

Lajos Hanzo - One of the best experts on this subject based on the ideXlab platform.

  • Fixed-rate video codecs for mobile radio systems
    European Transactions on Telecommunications, 1997
    Co-Authors: Jurgen Streit, Lajos Hanzo
    Abstract:

    A comparative study of arbitrarily programmable, but fixed-rate videophone codecs using quarter common intermediate format (QCIF) video sequences scanned at 10 frames/s is offered. In contrast to existing and forthcoming standard schemes, such as the H.261, H.263 and MPEG2. MPEG4 codecs, which rely on bandwidth-efficient but error-sensitive variable-length coding techniques combined with a complex self-descriptive bitstream structure, the proposed codecs exhibit a more robust, regular bitstream and a constant bitrate. Clearly, their philosophy is different from the above error-sensitive and variable-rate standard schemes, since these constant-rate codecs were designed to allow direct replacement of mobile radio voice codecs in second generation wireless systems, such as the Pan-European GSM, the American IS-54 and IS-95 as well as the Japanese systems, operating at 13, 8, 9.6 and 6.7 kbit/s, respectively. This philosophy can, however, be adopted lo higher rate systems, such as the Digital European Cordless Telecommunications (DECT) and the Universal Mobile Telecommunication system (UMTS). The Type I codecs proposed benefit from invoking sophisticated compression techniques in order to achieve best video quality at a given bitrate. In contrast, the Type 2 schemes introduced maximize the codecs' error- resilience at the cost of slightly reduced video quality under error-Cree conditions. Gain-cost quantized, fixed but arbitrarily programmable rate discrete cosine transformed (DCT) video codecs, vector-quantised (VQI and quad-tree (QT) coded algorithms arc proposed and their video quality. complexity. compression ratio and error resilience trade-offs are comparatively analysed under identical conditions. Finally, our candidate codecs are compared to the standard H26 I . H.263 and MPEG2 benchmark codecs.