On the Code Synchronization of PPM/OPPM Fiber-Optic CDMA Systems(<Special Section>Wide Band Systems)

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概要

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• copyright(c)2004 IEICE許諾番号：08RB0011　http://search.ieice.org/index.htmlThis paper proposes and theoretically evaluates two different schemes of code acquisition for pulse-position modulation (PPM) and overlapping PPM (OPPM) fiber-optic code-division multiple-access (CDMA) systems, namely threshold-based and demodulator-based code acquisition. Single-dwell detector and serial-search algorithm are employed for both schemes. Theoretical analysis is carried out for shot-noise-limited photon-counting receiver. Discussions upon effects of various parameter settings on the performance of code acquisition for PPM/OPPM fiber-optic CDMA systems, such as index of overlap, PPM/OPPM multiplicity, average photon counts per information nat, and darkcurrents, are presented. It is shown that when the threshold is properly selected, the threshold-based code acquisition system offers better performance, in terms of mean number of training frames, than the demodulator-based one.

• 社団法人電子情報通信学会の論文
• 2004-10-01

著者

• Yashima Hiroyuki

  Department Of Management Science Tokyo University Of Science

• Yashima Hiroyuki

  Department Of Information And Computer Sciences Saitama University

• PHAM Anh

  Department of Information and Computer Sciences, Saitama University

• Pham Anh

  Department Of Information And Computer Sciences Saitama University

• Anh T.

  Department of Information and Computer Sciences, Saitama University

• 八嶋 弘幸

  Department of Management Science, Tokyo University of Science

関連論文

• Analysis of Optical PPM/CDMA System with M-Ary Convolutional Coding
• Performance Analysis of MDSS Code Acquisition Using SLS for Optical CDMA Systems(Fiber-Optic Transmission for Communications)
• Performance Analysis of Coherent Ultrashort Light Pulse CDMA Communication Systems with Nonlinear Optical Thresholder(Fiber-Optic Transmission for Communications)
• Dispersion Compensation for Ultrashort Light Pulse CDMA Communication Systems (Regular section)
• Improvement of Coherent Ultrashort Light Pulse CDMA Communication Systems with Distinct 4-Level m-Sequences(Wide Band Systems)
• On the Code Synchronization of PPM/OPPM Fiber-Optic CDMA Systems(Wide Band Systems)

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