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
Este artigo propõe um novo esquema universal de terminação de linha para ONUs (unidades de rede óptica) de sistemas de acesso local de fibra óptica. Sua principal característica é que são necessários apenas conversores AD/DA de baixo custo para áudio Hi-Fi. Como os conversores de áudio AD/DA são insuficientes para a taxa básica de acesso ISDN (● 320kbaud) e causam distorção da forma de onda, desenvolvemos um algoritmo de detecção simples que não utiliza nenhum filtro de equalização. O algoritmo pode lidar com vários canais com uma MPU (unidade de microprocessamento) de uso geral. Com base nisso, é apresentada uma nova arquitetura para um sistema de acesso local de fibra óptica que remove as MPUs de cada unidade de rede óptica (ONU) e as coloca no escritório central (CO). O sistema proposto produz uma ONU pequena e com serviço uniforme que suporta uma ampla gama de serviços de banda estreita (POTS e ISDN) sem distinção. Para realizar este sistema com o menor custo possível, é desenvolvido um esquema de multiplexação por divisão de código (CDM) de alta velocidade com novos conjuntos de palavras de código.
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Tetsuya ONODA, Tetsuo TSUJIOKA, Ryuma KAKINUMA, Seiichi YAMANO, ""Service-uniform" ONU Based on Low Cost Audio AD/DA Converters and CDM with Novel Code Word Sets" in IEICE TRANSACTIONS on Communications,
vol. E82-B, no. 9, pp. 1446-1458, September 1999, doi: .
Abstract: This paper proposes a novel universal line termination scheme for the ONUs (optical network units) of fiber-optic local access systems. Its main feature is that only low cost AD/DA converters for Hi-Fi audio are needed. Because audio AD/DA converters are insufficient for ISDN basic rate access (● 320kbaud) and cause waveform distortion, we develop a simple detection algorithm that does not use any equalizing filter. The algorithm can handle plural channels with one general purpose MPU (micro-processing unit). Based on this, a novel architecture for a fiber-optic local access system is presented that removes the MPUs from each optical network unit (ONU) and places them in the central office (CO). The proposed system yields a small, service-uniform ONU that supports a wide range of narrow-band services (POTS & ISDN) with no distinction. To realize this system at the lowest possible cost, a high-speed code division multiplexing (CDM) scheme with novel code word sets is developed.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e82-b_9_1446/_p
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@ARTICLE{e82-b_9_1446,
author={Tetsuya ONODA, Tetsuo TSUJIOKA, Ryuma KAKINUMA, Seiichi YAMANO, },
journal={IEICE TRANSACTIONS on Communications},
title={"Service-uniform" ONU Based on Low Cost Audio AD/DA Converters and CDM with Novel Code Word Sets},
year={1999},
volume={E82-B},
number={9},
pages={1446-1458},
abstract={This paper proposes a novel universal line termination scheme for the ONUs (optical network units) of fiber-optic local access systems. Its main feature is that only low cost AD/DA converters for Hi-Fi audio are needed. Because audio AD/DA converters are insufficient for ISDN basic rate access (● 320kbaud) and cause waveform distortion, we develop a simple detection algorithm that does not use any equalizing filter. The algorithm can handle plural channels with one general purpose MPU (micro-processing unit). Based on this, a novel architecture for a fiber-optic local access system is presented that removes the MPUs from each optical network unit (ONU) and places them in the central office (CO). The proposed system yields a small, service-uniform ONU that supports a wide range of narrow-band services (POTS & ISDN) with no distinction. To realize this system at the lowest possible cost, a high-speed code division multiplexing (CDM) scheme with novel code word sets is developed.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - "Service-uniform" ONU Based on Low Cost Audio AD/DA Converters and CDM with Novel Code Word Sets
T2 - IEICE TRANSACTIONS on Communications
SP - 1446
EP - 1458
AU - Tetsuya ONODA
AU - Tetsuo TSUJIOKA
AU - Ryuma KAKINUMA
AU - Seiichi YAMANO
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E82-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 1999
AB - This paper proposes a novel universal line termination scheme for the ONUs (optical network units) of fiber-optic local access systems. Its main feature is that only low cost AD/DA converters for Hi-Fi audio are needed. Because audio AD/DA converters are insufficient for ISDN basic rate access (● 320kbaud) and cause waveform distortion, we develop a simple detection algorithm that does not use any equalizing filter. The algorithm can handle plural channels with one general purpose MPU (micro-processing unit). Based on this, a novel architecture for a fiber-optic local access system is presented that removes the MPUs from each optical network unit (ONU) and places them in the central office (CO). The proposed system yields a small, service-uniform ONU that supports a wide range of narrow-band services (POTS & ISDN) with no distinction. To realize this system at the lowest possible cost, a high-speed code division multiplexing (CDM) scheme with novel code word sets is developed.
ER -