The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
A transmissão de vídeo pela interoperabilidade móvel mundial para acesso por microondas (WiMAX) pode ser degradada no servidor devido ao efeito de desvanecimento e transferência. Neste artigo, propomos um esquema de resiliência de erro adaptativo de canal para transmissão de vídeo em WiMAX móvel. Quando a condição do canal começa a acionar o handoff, o quadro atual é armazenado na memória de longo prazo para a correção direta de erros, e os quadros seguintes são codificados usando vetores de movimento duplo (MVs) no sentido de compensação de movimento de múltiplas hipóteses. Mesmo que um quadro inteiro seja perdido, podemos reconstruir os quadros seguintes usando o quadro armazenado na memória de longo prazo. No entanto, a propagação do erro ainda permanece neste método de resiliência de erro direto. Para atualizar os quadros errados para o decodificador, o codificador utiliza a atualização adaptativa de canal (CAR). No CAR, a taxa do canal é primeiro prevista usando o parâmetro do canal, uma relação entre portadora e interferência e ruído (CINR), e o codificador determina de forma adaptativa o número de blocos a serem codificados no modo intra com base nas informações de feedback. Avaliações de desempenho são apresentadas para demonstrar a eficácia do método proposto.
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Hye-Soo KIM, Byeong-Doo CHOI, Chun-Su PARK, Sang-Hee PARK, Sung-Jea KO, "Channel Adaptive Error Resilience Scheme for Video Transmission over Mobile WiMAX" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 10, pp. 3052-3059, October 2008, doi: 10.1093/ietcom/e91-b.10.3052.
Abstract: Video transmission over mobile worldwide interoperability for microwave access (WiMAX) can be serverly degraded due to the effect of fading and handoff. In this paper, we propose a channel adaptive error resilience scheme for video transmission over mobile WiMAX. When the channel condition begins to trigger handoff, the current frame is stored in the long-term memory for the forward error correction, and the following frames are encoded by using double motion vectors (MVs) in the sense of multi-hypothesis motion compensation. Even if a whole frame is lost, we can reconstruct the following frames using the stored frame in the long-term memory. However, the error propagation still remains in this forward error resilience method. To refresh the erroneous frames to the decoder, the encoder utilizes the channel adaptive refreshing (CAR). In the CAR, the channel rate is first predicted using channel parameter, a carrier to interference and noise ratio (CINR), and the encoder adaptively determines the number of blocks to be encoded in the intra mode based on the feedback information. Performance evaluations are presented to demonstrate the effectiveness of the proposed method.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.10.3052/_p
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@ARTICLE{e91-b_10_3052,
author={Hye-Soo KIM, Byeong-Doo CHOI, Chun-Su PARK, Sang-Hee PARK, Sung-Jea KO, },
journal={IEICE TRANSACTIONS on Communications},
title={Channel Adaptive Error Resilience Scheme for Video Transmission over Mobile WiMAX},
year={2008},
volume={E91-B},
number={10},
pages={3052-3059},
abstract={Video transmission over mobile worldwide interoperability for microwave access (WiMAX) can be serverly degraded due to the effect of fading and handoff. In this paper, we propose a channel adaptive error resilience scheme for video transmission over mobile WiMAX. When the channel condition begins to trigger handoff, the current frame is stored in the long-term memory for the forward error correction, and the following frames are encoded by using double motion vectors (MVs) in the sense of multi-hypothesis motion compensation. Even if a whole frame is lost, we can reconstruct the following frames using the stored frame in the long-term memory. However, the error propagation still remains in this forward error resilience method. To refresh the erroneous frames to the decoder, the encoder utilizes the channel adaptive refreshing (CAR). In the CAR, the channel rate is first predicted using channel parameter, a carrier to interference and noise ratio (CINR), and the encoder adaptively determines the number of blocks to be encoded in the intra mode based on the feedback information. Performance evaluations are presented to demonstrate the effectiveness of the proposed method.},
keywords={},
doi={10.1093/ietcom/e91-b.10.3052},
ISSN={1745-1345},
month={October},}
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TY - JOUR
TI - Channel Adaptive Error Resilience Scheme for Video Transmission over Mobile WiMAX
T2 - IEICE TRANSACTIONS on Communications
SP - 3052
EP - 3059
AU - Hye-Soo KIM
AU - Byeong-Doo CHOI
AU - Chun-Su PARK
AU - Sang-Hee PARK
AU - Sung-Jea KO
PY - 2008
DO - 10.1093/ietcom/e91-b.10.3052
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2008
AB - Video transmission over mobile worldwide interoperability for microwave access (WiMAX) can be serverly degraded due to the effect of fading and handoff. In this paper, we propose a channel adaptive error resilience scheme for video transmission over mobile WiMAX. When the channel condition begins to trigger handoff, the current frame is stored in the long-term memory for the forward error correction, and the following frames are encoded by using double motion vectors (MVs) in the sense of multi-hypothesis motion compensation. Even if a whole frame is lost, we can reconstruct the following frames using the stored frame in the long-term memory. However, the error propagation still remains in this forward error resilience method. To refresh the erroneous frames to the decoder, the encoder utilizes the channel adaptive refreshing (CAR). In the CAR, the channel rate is first predicted using channel parameter, a carrier to interference and noise ratio (CINR), and the encoder adaptively determines the number of blocks to be encoded in the intra mode based on the feedback information. Performance evaluations are presented to demonstrate the effectiveness of the proposed method.
ER -