IEICE TRANSACTIONS on Communications
"Service-uniform" ONU Based on Low Cost Audio AD/DA Converters and CDM with Novel Code Word Sets
Summary :
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.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E82-B No.9 pp.1446-1458
- Publication Date
- 1999/09/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Optical Communication
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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},}
Copy
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 -
English
