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Paper Abstract and Keywords
Presentation 2004-07-09 10:00
Multi-rate and Multi-quality Optical CDMA System using Adaptive Overlapping Pulse-Position Modulator and Power Controller
Takaya Miyazawa, Iwao Sasase (Keio Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) We propose the multi-rate and multi-quality transmission scheme using adaptive overlapping pulse-position modulator(OPPM) and power controller in optical CDMA networks.
The proposed adaptive OPPM scheme has the advantage that the bit-rate can easily be changed in the electronic domain and the power controller requires only power attenuator.
This results in simpler system configuration than the conventional multi-rate schemes which require to change the code sequence in the optical domain depending on the required bit-rate of the user.
Moreover, the difference of the bit-rates does not have so much effect on the BEP and the difference of the power does not cause the change of bit-rate.
Thus, the proposed scheme using the adaptive OPPM and power controller can easily achieve a large number of multimedia service differentiation with simple system configuration by the combination of OPPM parameter and optical transmitted power.
We show that the proposed scheme can achieve distinct differentiation of a large number of service classes with simple system configuration.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical CDMA / Adaptive OPPM / Power Controller / Multimedia transmission / / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 171, CS2004-29, pp. 1-6, July 2004.
Paper # CS2004-29 
Date of Issue 2004-07-02 (CS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee CS  
Conference Date 2004-07-09 - 2004-07-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagaoka University of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network controls, access networks, network emulations, IP services, IP networks, etc. 
Paper Information
Registration To CS 
Conference Code 2004-07-CS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multi-rate and Multi-quality Optical CDMA System using Adaptive Overlapping Pulse-Position Modulator and Power Controller 
Sub Title (in English)  
Keyword(1) Optical CDMA  
Keyword(2) Adaptive OPPM  
Keyword(3) Power Controller  
Keyword(4) Multimedia transmission  
1st Author's Name Takaya Miyazawa  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Iwao Sasase  
2nd Author's Affiliation Keio University (Keio Univ.)
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Date Time 2004-07-09 10:00:00 
Presentation Time 25 
Registration for CS 
Paper # IEICE-CS2004-29 
Volume (vol) IEICE-104 
Number (no) no.171 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-CS-2004-07-02 

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