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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Recentemente, os computadores portáteis e as comunicações móveis desenvolveram-se rapidamente. Junto com o desenvolvimento do ambiente de computação móvel, as demandas de transmissão de imagens através de canais sem fio estão crescendo. Contudo, técnicas de codificação de imagem de alta eficiência não são projetadas para canais de comunicação sem fio. O uso de códigos de comprimento variável (VLCs) nessas técnicas de codificação dificulta a sincronização de um receptor com as palavras-código no canal ruidoso. Por outro lado, foi proposta uma técnica de transmissão de código de comprimento variável utilizando CDM multicódigo (Code Division Multiplex). Neste artigo, a técnica multicode CDM é aplicada à transmissão sem fio de imagens comprimidas pelo algoritmo H. 263. Especialmente, a técnica proposta é empregada para transmissão de vetores de movimento. Em consequência, a técnica de transmissão proposta reduz a necessidade Eb/N0 em comparação com a técnica de transmissão convencional.
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Takashi KASAI, Yukitoshi SANADA, Kiyomichi ARAKI, "Application of the VLC Parallel Transmission Technique to Motion Vector Transmission" in IEICE TRANSACTIONS on Fundamentals,
vol. E82-A, no. 12, pp. 2778-2782, December 1999, doi: .
Abstract: Recently portable computers and mobile communications have been developed rapidly. Along with the developments of mobile computing environment, the demands of transmitting images over wireless channels are growing. However, high efficiency image coding techniques are not designed for the wireless communication channels. The use of variable length codes (VLCs) in those coding techniques makes a receiver hard to synchronize with the codewords on the noisy channel. On the other hand, a variable length code transmission technique utilizing multicode CDM (Code Division Multiplex) has been proposed. In this paper, the multicode CDM technique is applied to wireless transmission of images compressed by the H. 263 algorithm. Especially, the proposed technique is employed for motion vector transmission. In consequence, the proposed transmission technique reduces the required Eb/N0 as compared with the conventional transmission technique.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e82-a_12_2778/_p
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@ARTICLE{e82-a_12_2778,
author={Takashi KASAI, Yukitoshi SANADA, Kiyomichi ARAKI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Application of the VLC Parallel Transmission Technique to Motion Vector Transmission},
year={1999},
volume={E82-A},
number={12},
pages={2778-2782},
abstract={Recently portable computers and mobile communications have been developed rapidly. Along with the developments of mobile computing environment, the demands of transmitting images over wireless channels are growing. However, high efficiency image coding techniques are not designed for the wireless communication channels. The use of variable length codes (VLCs) in those coding techniques makes a receiver hard to synchronize with the codewords on the noisy channel. On the other hand, a variable length code transmission technique utilizing multicode CDM (Code Division Multiplex) has been proposed. In this paper, the multicode CDM technique is applied to wireless transmission of images compressed by the H. 263 algorithm. Especially, the proposed technique is employed for motion vector transmission. In consequence, the proposed transmission technique reduces the required Eb/N0 as compared with the conventional transmission technique.},
keywords={},
doi={},
ISSN={},
month={December},}
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TY - JOUR
TI - Application of the VLC Parallel Transmission Technique to Motion Vector Transmission
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2778
EP - 2782
AU - Takashi KASAI
AU - Yukitoshi SANADA
AU - Kiyomichi ARAKI
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E82-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 1999
AB - Recently portable computers and mobile communications have been developed rapidly. Along with the developments of mobile computing environment, the demands of transmitting images over wireless channels are growing. However, high efficiency image coding techniques are not designed for the wireless communication channels. The use of variable length codes (VLCs) in those coding techniques makes a receiver hard to synchronize with the codewords on the noisy channel. On the other hand, a variable length code transmission technique utilizing multicode CDM (Code Division Multiplex) has been proposed. In this paper, the multicode CDM technique is applied to wireless transmission of images compressed by the H. 263 algorithm. Especially, the proposed technique is employed for motion vector transmission. In consequence, the proposed transmission technique reduces the required Eb/N0 as compared with the conventional transmission technique.
ER -