Coding for Multi-Pulse PPM with Imperfect Slot Synchronization in Optical Direct-Detection Channels
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概要
- 論文の詳細を見る
The performance of coded multi-pulse pulse position modulation (MPPM) consisting of m slots and 2 pulses, denoted as (m, 2) MPPM, with imperfect slot synchronization is analyzed. Convolutional codes and Reed-Solomon (RS) codes are employed for (m, 2) MPPM, and the bit error probability of coded (m, 2) MPPM in the presence of the timing offset is de-rived. In each coded (m, 2) MPPM, we compare the performance of some different code rate systems. Moreover, we compare the performance of both systems at the same information bit rate. It is shown that in both coded systems, the performance of code rate-1/2 coded (m, 2) MPPM is the best when the timing offset is small. When the timing offset is somewhat large, however, uncoded (m, 2) MPPM is shown to perform better than coded (m, 2) MPPM. Further, convolutional coded (m, 2) MPPM with the constraint length k ≧ 7 is shown to perform better than RS coded (m, 2) MPPM for the same code rate.
- 社団法人電子情報通信学会の論文
- 1995-06-25
著者
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Sasase I
Keio Univ. Yokohama‐shi Jpn
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Sasase Iwao
The Department Of Information And Computer Science Keio University
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Sato K
Advanced Mobile Telecommunication Technology Inc.
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OHTSUKI Tomoaki
Faculty of Science and Technology, Keio University
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Sasase Iwao
The Faculty Of Science And Technology Keio University
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Sasase Iwao
Faculty Of Science And Technology Keio University
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Sato K
Ntt Network Innovation Laboratories
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Sato Kazumi
Faculty of Science and Technology, Keio University
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Ohtsuki Tomoaki
Department Of Electrical Engineering Tokyo University Of Science
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Ohtsuki Tomoaki
Faculty Of Science And Technology Keio University
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Ohtsuki Tomoaki
The Faculty Of Science And Technology Science University Of Tokyo
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Sato K
Ykc Corp. Musashimurayama‐shi Jpn
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Ohtsuki T
Department Of Electrical Engineering Tokyo University Of Science
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