A Cross-Layer Unequal Error Protection Scheme for Prioritized H.264 Video using RCPC Codes and Hierarchical QAM
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
We investigate the rate-compatible punctured convolutional (RCPC) codes concatenated with hierarchical QAM for designing a cross-layer unequal error protection scheme for H.264 coded sequences. We first divide the H.264 encoded video slices into three priority classes based on their relative importance. We investigate the system constraints and propose an optimization formulation to compute the optimal parameters of the proposed system for the given source significance information. An upper bound to the significance-weighted bit error rate in the proposed system is derived as a function of system parameters, including the code rate and geometry of the constellation. An example is given with design rules for H.264 video communications and 3.5-4 dB PSNR improvement over existing RCPC based techniques for AWGN wireless channels is shown through simulations.
Abstract
We investigate the rate-compatible punctured convolutional (RCPC) codes concatenated with hierarchical QAM for designing a cross-layer unequal error protection scheme for H.264 coded sequences. We first divide the H.264 encoded video slices into three priority classes based on their relative importance. We investigate the system constraints and propose an optimization formulation to compute the optimal parameters of the proposed system for the given source significance information. An upper bound to the significance-weighted bit error rate in the proposed system is derived as a function of system parameters, including the code rate and geometry of the constellation. An example is given with design rules for H.264 video communications and 3.5-4 dB PSNR improvement over existing RCPC based techniques for AWGN wireless channels is shown through simulations.
참고문헌 (23)
- AVC Video Coding with Priority Classification, Adaptive NALU Size and Fragmentation, "Robust H.264", pp.2009, S. Kumar
- S. Arslan, "Progressive source transmissions using joint source-channel coding and hierarchical modulation in packetized networks" (2009), IEEE Globecom
- T. -L. Lin, "Perceptual video quality optimization in AWGN channel using low complexity channel code rate allocation" (2009), Systems and Computers
- AVC Video Transmission over Wireless Channels, "A Multilevel Unequal Protection Scheme for Robust H.264", pp.2009, A. Bhatnagar
- W.-H. Chung, "Unequal Error Protection for H.264 Video using RCPC Codes and Hierarchical QAM" (2010), IEEE ICC
- T. Wiegand, "Overview of the H.264", AVC video coding standard, 2002, pp.13(7), 560~576
- "Draft ITU-T Recommendation and Final Draft International Standard of Joint Video Specification (ITU-T Rec. H.264", ISO, In Joint Video Team (JVT) Of ISO, pp.IEC MPEG and ITU-T VCEG, JVTG050, 2003[DOI]
- S. Kumar, "Error Resiliency Schemes in H.264", AVC Standard, AVC Video Coding Standard), pp.2006, 17(2)[DOI]
- P. K. Vitthaladevuni, "A closed-form expression for the exact BER of generalized PAM and QAM constellations", IEEE Trans, 52(5), pp.698~700 (2004)
- P. K. Vitthaladevuni, "A recursive algorithm for the exact BER computation of generalized hierarchical QAM constellations", IEEE Trans, 49(1), pp.297~307 (2003)
- P. K. Vitthaladevuni, "BER computation of 4", M-QAM hierarchical constellations, 2001, pp.47(3), 228~239
- A. Viterbi, "Convolutional Codes and Their Performance in Communication Systems", IEEE Trans, 19(5), pp.751~772 (1971)
- L. H. C. Lee, "New rate-compatible punctured convolutional codes for Viterbi decoding", IEEE Trans. Commun, 42(12), pp.3073~3079 (1994)
- J. Hagenauer, "Rate-compatible punctured convolutional codes (RCPC codes) and their applications", IEEE Trans, 36(4), pp.389~400 (1988)
- N. Goertz, "Logarithmic Bit-Significance Ratio: Definition, Calculation Rules and Examples", pp.2869~2873 (2006), IEEE Symp
- P. Poda, "Designing DCT Source Significance Information for Efficient and Robust Transmission", Contemporary Engineering Sciences, 2(2), pp.67~84 (2009)
- M.G. Martini, "Rate-distortion models for unequal error protection for wireless video transmission", IEEE VTC, 2, pp.1049~1053 (2004)
- J. Lu, "Asymmetric PSK Constellation Design to Minimize Distortion in PCM Data Transmission", pp.1~5 (2008), IEEE Sarnoff Symp
- M. B. Pursley, "Adaptive Non-uniform Phase-Shift-Key Modulation for Multimedia Traffic in Wireless Networks", IEEE J. Sel. Areas Commun, 18(8), pp.1394~1407 (2000)
- M. Morimoto, "A hierarchical image transmission system in a fading channel", pp.769~772 (1995), IEEE
- M. M. Ghandi, "Layered H.264 video transmission with hierarchical QAM", J. Visual Commun. and Image Representation, 17(2) (2006)
- A. Annamalai, "Improving the Efficiency of Wireless Networks via a Passive Rate-Adaptation Strategy", Wireless Telecom Symp (2008)
- Y. Chang, "A low-complexity unequal error protection of H.264", AVC video using adaptive hierarchical QAM, 2006, pp.52(4), 1153~1158