| AN ERROR-RESILIENT H.263＋ CODING SCHEME FOR VIDEO TRANSMISSION OVER WIRELESS NETWORKS |
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| 作者姓名： | Li Jian Bie Hongxia |
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| 作者单位： | [1]School of hformation Engineering, Beijing University g]Posts ＆ Telecommunications, Beijing 100876, China [2]Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China |
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| 基金项目： | Li Jian, born in 1978, male, Master candidate. School of Information Engineering, Mailbox 261, Beijing University of Posts and Telecom-munications, Beijing 100876, China. lighter_lj@163.com. |
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| 摘 要： | Video transmission over wireless networks has received much attention recently for its restricted bandwidth and high bit-error rate, Based on H.263＋, by reversing part stream sequences of each Group Of Block （GOB）, an error resilient scheme is presented to improve video robustness without additional bandwidth burden. Error patterns are employed to simulate Widcband Code Division Multiple Acccss,（WCDMA） channels to check out error resilience performances. Simulation results show that both subjective and objective qualities of the reconstructed images are improved remarkably. The mean Peak Signal to Noise Ratio （PSNR） is increased by 0.5dB, and the highest increment is 2dB.
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| 关 键 词： | 无线网络 误差检测 误差回弹 误差局域化 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-09-19 |
An error-resilient H.263+ coding scheme for video transmission over wireless networks |
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| Li Jian Bie Hongxia.An error-resilient H.263+ coding scheme for video transmission over wireless networks[J].Journal of Electronics,2006,23(6):831-836. |
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| Authors: | Jian Li Hongxia Bie |
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| Affiliation: | 1. School of Information Engineering, Beijing University of Posts & Telecommunications, Beijing 100876, China
2. School of Information Engineering, Beijing University of Posts & Telecommunications, Beijing 100876, China;Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China |
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| Abstract: | Video transmission over wireless networks has received much attention recently for its restricted bandwidth and high bit-error rate. Based on H.263 , by reversing part stream sequences of each Group Of Block (GOB), an error resilient scheme is presented to improve video robustness without additional bandwidth burden. Error patterns are employed to simulate Wideband Code Division Multiple Access(WCDMA) channels to check out error resilience performances. Simulation results show that both subjective and objective qualities of the reconstructed images are improved remarkably. The mean Peak Signal to Noise Ratio (PSNR)is increased by 0.5dB, and the highest increment is 2dB. |
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| Keywords: | Wireless networks Error detection Error resilient Error localization Resynchronization |
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