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Paper Abstract and Keywords
Presentation 2011-06-24 16:20
Performance Comparison of Trellis-Shaped OFDM Systems over Nonlinear Channels
Ryota Yoshizawa, Hideki Ochiai (Yokohama Nat Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Orthogonal frequency-division multiplexing (OFDM) can achieve remarkable performance in terms of
spectral efficiency, but its efficiency at transmitter power amplifier (PA) becomes poor because of its high peak–
to-average ratio (PAPR) nature of transmitted signals. Trellis shaping (TS) is an effective method to reduce PAPR
without signal distortion. Several metrics are developed for TS to achieve efficient PAPR reduction in the literature.
In many practical OFDM systems, however, slight peak clipping at PA is acceptable. This may cause nonlinear
distortion that degrades bit error rate (BER) performance. In this paper, we make performance comparison of
trellis-shaped OFDM systems with different metrics in terms of BER in a practical scenario where the signal is
clipped by PA.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM / bit error rate / trellis shaping / PA-nonlinearlity / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 94, RCS2011-72, pp. 215-220, June 2011.
Paper # RCS2011-72 
Date of Issue 2011-06-16 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee RCS  
Conference Date 2011-06-23 - 2011-06-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Ryukyu Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2011-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Comparison of Trellis-Shaped OFDM Systems over Nonlinear Channels 
Sub Title (in English)  
Keyword(1) OFDM  
Keyword(2) bit error rate  
Keyword(3) trellis shaping  
Keyword(4) PA-nonlinearlity  
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1st Author's Name Ryota Yoshizawa  
1st Author's Affiliation Yokohama National University (Yokohama Nat Univ.)
2nd Author's Name Hideki Ochiai  
2nd Author's Affiliation Yokohama National University (Yokohama Nat Univ.)
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Speaker
Date Time 2011-06-24 16:20:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2011-72 
Volume (vol) IEICE-111 
Number (no) no.94 
Page pp.215-220 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2011-06-16 


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