2002 Fiscal Year Annual Research Report

マルチメディア通信に対応する高多重度光CDMA通信方式

Research Project

Project/Area Number	12650362
Research Institution	Saitama University
Principal Investigator	八嶋弘幸埼玉大学, 工学部, 助教授 (30230197)
Keywords	光CDMA / タイムホッピング / マルチメディア
Research Abstract	マルチメディア通信に対応する高多重度光CDMA通信方式に関する諸研究として、送信光強度制御タイムホッピングCDMAの研究を行い、提案方式の優位性を明らかにした。この研究成果はIEEE Journal of Lightwave Technologyに掲載されることが決まった。さらに、周波数領域の光CDMAにおいて、送受信機の位相変調器における変調度の変化の影響を解析的に求めた。本システムでは位相変調器としてLCM(Liquid Crystal Modulator)を用いることができる。LCMは温度の影響により変調度が変動することが知られているが、これまで、変調度の変化がビット誤り率(BER)に与える影響については検討されていなかった。本研究では、周波数領域の光CDMAにおいて、変調度が変化した際の変調度とBERの関係を解析し、諸特性を求めた。その結果、変調度の変化がBERに与える影響は大きく、変調度の制御がBERを低くするために重要であることを示した。

Research Products
(16 results)

All Other

All Publications (16 results)

[Publications] 岡島一平, 八嶋弘幸: "周波数領域で符号化を行う光CDMA通信システムにおける位相変調器の変調度の影響"電子情報通信学会論文誌. Vo1.J85-B, no.11. 1856-1864 (2002)
[Publications] Igarasi Y., Yashima H.: "Dispersion Compensation for Ultrashort Light Pulse CDMA Communication Systems"IEICE Transactions on Commun.. vol.E85-B, no.12. 2776-2784 (2002)
[Publications] Hiroyuki Yashima, Toshihiro Kobayashi: "Optical CDMA with Time Hopping and Power Control for Multimedia Networks"IEEE Journal of Lightwave Technology. vol.19, no.3. (2003)
[Publications] Okajima I., Yashima H.: "A Relation between Degree of Modulation and BER in Coherent Ultrashort Light Pulse CDMA Communication Systems"Proc. of the 6^<th> Asia-Pacific Conf. on Communications 2000. vol.2. 173-177 (2000)
[Publications] Yashima H., Kobayashi T.: "Optical CDMA with Time Hopping and Power Control for Multimedia Networks"Proc. of 2000 Int. Symp. on Information Theory and its Applications. Vol.2. 544-547 (2000)
[Publications] Sato T., Yashima H.: "Optical CDMA Systems with Check Sum Selective Decoding and Reliability Value"Proc. of the Int. Symp. on Information Theory and its Applications. vol.2. 548-551 (2000)
[Publications] Igarashi Y., Yashima H.: "Coherent Ultrashort Light Pulse CDMA Influenced by Fiber Dispersion"Proc. of the 8^<th> IEEE Int. Workshop on Intelligent Signal Processing and Communication Systems. Vol.1. 577-582 (2000)
[Publications] Yamazaki, T., Sanada Y., Yashima H., Ohtsuki T.: "Performance of Coded Multicarier Modulation on a Correlated Multipath Fading Channel Using a Gilbert Model"Proc. of the 8^<th> IEEE Int. Workshop on Intelligent Signal Processing and Communication Systems. vol.1. 555-560 (2000)
[Publications] Ohtsuki T., Yashima H., Sanada Y., Kaneko T.: "Atmospheric Optical CDMA Systems"Proc. of the Int.. Symp. on Information Theory and its Applications. vol.2. 532-535 (2000)
[Publications] Suzuki J., Chiba S., Yashima H.: "Data Transmission over Analog Speech Channel Utilizing Spread Spectrum Modulation"Proc. of the 8^<th> IEEE Int. Workshop on Intelligent Signal Processing and Communication Systems. Vol.1. 551-554 (2000)
[Publications] Igarashi Y., Inoue H., Yashima H.: "FE-CDMA communication systems with EDFA"IEICE ITC-CSCC. 529-532 (2001)
[Publications] Igarashi Y., Yashima H.: "Performance of total dispersion compensation for ultrashort light pulse CDMA"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. 769-775 (2001)
[Publications] Yamazaki T., Yashima H.: "A Modeling for Multipath Fading Channel using a Gilbert Model in Coded Multicarrier Transmission"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. 565-570 (2001)
[Publications] Igarashi Y., Yashima H.: "Ultrashort light pulse CDMA with simultaneous fiber dispersion and dispersion slope compensation"Proceedings of 2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. 382-385 (2001)
[Publications] Y.Igarashi, A.Kurosawa, H.Yashima: "The Effect of Polarization-Mode Dispersion on Coherent Ultrashort Light Pulse CDMA Communication System"Int.nat'l Symp. Imformation Theory and Its Applications. 343-346 (2002)
[Publications] 斉藤史隆, 八嶋弘幸, 中村卓也, 若森和彦, 黒川敏, 藤田嘉美: "光無線副搬送波多重通信の特性評価"電子情報通信学会技術報告、通信方式. (2002)

2002 Fiscal Year Annual Research Report

マルチメディア通信に対応する高多重度光CDMA通信方式

Principal Investigator

八嶋 弘幸 埼玉大学, 工学部, 助教授 (30230197)

Research Products

[Publications] 岡島一平, 八嶋弘幸: "周波数領域で符号化を行う光CDMA通信システムにおける位相変調器の変調度の影響"電子情報通信学会論文誌. Vo1.J85-B, no.11. 1856-1864 (2002)

[Publications] Igarasi Y., Yashima H.: "Dispersion Compensation for Ultrashort Light Pulse CDMA Communication Systems"IEICE Transactions on Commun.. vol.E85-B, no.12. 2776-2784 (2002)

[Publications] Hiroyuki Yashima, Toshihiro Kobayashi: "Optical CDMA with Time Hopping and Power Control for Multimedia Networks"IEEE Journal of Lightwave Technology. vol.19, no.3. (2003)

[Publications] Okajima I., Yashima H.: "A Relation between Degree of Modulation and BER in Coherent Ultrashort Light Pulse CDMA Communication Systems"Proc. of the 6^<th> Asia-Pacific Conf. on Communications 2000. vol.2. 173-177 (2000)

[Publications] Yashima H., Kobayashi T.: "Optical CDMA with Time Hopping and Power Control for Multimedia Networks"Proc. of 2000 Int. Symp. on Information Theory and its Applications. Vol.2. 544-547 (2000)

[Publications] Sato T., Yashima H.: "Optical CDMA Systems with Check Sum Selective Decoding and Reliability Value"Proc. of the Int. Symp. on Information Theory and its Applications. vol.2. 548-551 (2000)

[Publications] Igarashi Y., Yashima H.: "Coherent Ultrashort Light Pulse CDMA Influenced by Fiber Dispersion"Proc. of the 8^<th> IEEE Int. Workshop on Intelligent Signal Processing and Communication Systems. Vol.1. 577-582 (2000)

[Publications] Yamazaki, T., Sanada Y., Yashima H., Ohtsuki T.: "Performance of Coded Multicarier Modulation on a Correlated Multipath Fading Channel Using a Gilbert Model"Proc. of the 8^<th> IEEE Int. Workshop on Intelligent Signal Processing and Communication Systems. vol.1. 555-560 (2000)

[Publications] Ohtsuki T., Yashima H., Sanada Y., Kaneko T.: "Atmospheric Optical CDMA Systems"Proc. of the Int.. Symp. on Information Theory and its Applications. vol.2. 532-535 (2000)

[Publications] Suzuki J., Chiba S., Yashima H.: "Data Transmission over Analog Speech Channel Utilizing Spread Spectrum Modulation"Proc. of the 8^<th> IEEE Int. Workshop on Intelligent Signal Processing and Communication Systems. Vol.1. 551-554 (2000)

[Publications] Igarashi Y., Inoue H., Yashima H.: "FE-CDMA communication systems with EDFA"IEICE ITC-CSCC. 529-532 (2001)

[Publications] Igarashi Y., Yashima H.: "Performance of total dispersion compensation for ultrashort light pulse CDMA"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. 769-775 (2001)

[Publications] Yamazaki T., Yashima H.: "A Modeling for Multipath Fading Channel using a Gilbert Model in Coded Multicarrier Transmission"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. 565-570 (2001)

[Publications] Igarashi Y., Yashima H.: "Ultrashort light pulse CDMA with simultaneous fiber dispersion and dispersion slope compensation"Proceedings of 2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. 382-385 (2001)

[Publications] Y.Igarashi, A.Kurosawa, H.Yashima: "The Effect of Polarization-Mode Dispersion on Coherent Ultrashort Light Pulse CDMA Communication System"Int.nat'l Symp. Imformation Theory and Its Applications. 343-346 (2002)

[Publications] 斉藤史隆, 八嶋弘幸, 中村卓也, 若森和彦, 黒川敏, 藤田嘉美: "光無線副搬送波多重通信の特性評価"電子情報通信学会技術報告、通信方式. (2002)

八嶋弘幸埼玉大学, 工学部, 助教授 (30230197)