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Paper Abstract and Keywords
Presentation 2012-03-09 11:15
Transmission Method of Clipping Negative QAM Signals for Orthogonal- Subcarrier- Division- Multiplexing PON
Takuya Takahashi, Takashi Kuriyama, Hiromi Ueda (Tokyo Univ. of Tech.)
Abstract (in Japanese) (See Japanese page) 
(in English) To economically provide higher bit rate services to users, we previously proposed an Orthogonal Subcarrier Division Multiplexing Passive Optical Network (OSDM-PON) using a digital modulation technology. We also showed that a 16-QAM based system can support up to 16 Optical Network Units ONUs), and constantly provide service data rate of 1 Gbps to each user; ONU made the QAM signal be completely positive by adding some bias before converting an electrical to optical signal due to no negative level in the optical domain. To decrease power consumption, this paper proposes a transmission method of clipping a negative QAM signal for OSDM-PON, and three methods for regenerating an original QAM signal from the clipped signal in the receiving Optical Line Terminal (OLT). We evaluate the proposed methods by simulations. We also evaluate transmission optical power between proposed and conventional one.
Keyword (in Japanese) (See Japanese page) 
(in English) QAM / orthogonal / subcarrier / PON / clip / positive / BPF /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 467, CS2011-131, pp. 177-182, March 2012.
Paper # CS2011-131 
Date of Issue 2012-03-01 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee CAS CS SIP  
Conference Date 2012-03-08 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Niigata 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network Processor, Signal Processing for communication, and Wireless LAN/PAN, etc. 
Paper Information
Registration To CS 
Conference Code 2012-03-CAS-CS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Transmission Method of Clipping Negative QAM Signals for Orthogonal- Subcarrier- Division- Multiplexing PON 
Sub Title (in English)  
Keyword(1) QAM  
Keyword(2) orthogonal  
Keyword(3) subcarrier  
Keyword(4) PON  
Keyword(5) clip  
Keyword(6) positive  
Keyword(7) BPF  
1st Author's Name Takuya Takahashi  
1st Author's Affiliation Tokyo University of Technology (Tokyo Univ. of Tech.)
2nd Author's Name Takashi Kuriyama  
2nd Author's Affiliation Tokyo University of Technology (Tokyo Univ. of Tech.)
3rd Author's Name Hiromi Ueda  
3rd Author's Affiliation Tokyo University of Technology (Tokyo Univ. of Tech.)
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Date Time 2012-03-09 11:15:00 
Presentation Time 25 
Registration for CS 
Paper # IEICE-CAS2011-139,IEICE-SIP2011-159,IEICE-CS2011-131 
Volume (vol) IEICE-111 
Number (no) no.465(CAS), no.466(SIP), no.467(CS) 
Page pp.177-182 
#Pages IEICE-6 
Date of Issue IEICE-CAS-2012-03-01,IEICE-SIP-2012-03-01,IEICE-CS-2012-03-01 

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