Optical CDMA with High Multiplication for Multimedia Communications

用于多媒体通信的高倍频光 CDMA

• 批准号: 12650362
• 负责人: YASHIMA Hiroyuki
• 金额: $ 2.11万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650362/
• 关键词: Optical CDMA; Time Hopping; Multimedia; 光通信; 多重通信

We have investigated multimedia optical CDMA (Code Division Multiple Access). We propose Time Hopping Optical CDMA with optical power control, We derive the performance of the proposed system and show that the proposed system achieves good performance with large simultaneous users and various bit rate.We also investigate a Frequency Domain Encoding CDMA (FE-CDMA) communication systems. In FE-CDMA, a liquid crystal phase modulator (LCM) can be used as a pseudorandom spatially phase mask. The effect of the degree of modulation of LCM is investigated. We derive the bit error rate (BER) and show that the BER significantly degrades as the degree of modulation changes.

我们研究了多媒体光码分多址(码分多址)。提出了一种基于光功率控制的跳时光码分多址系统，并对该系统的性能进行了理论推导，结果表明该系统在大用户数、多比特率的情况下具有较好的性能。在FE-CDMA中，液晶相位调制器(LCM)可以用作伪随机空间相位掩模。研究了液晶显示模块的调制度对其性能的影响。我们推导了误码率(BER)，结果表明，随着调制程度的改变，误码率会显著降低。

项目成果

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)

Y.Igarashi、A.Kurosawa、H.Yashima：“偏振模色散对相干超短光脉冲 CDMA 通信系统的影响”国际符号信息理论及其应用。

Yasutaka Igarashi: "Performance of total dispersion compensation for ultrashort light pulse CDMA"IEEE TENCON. (2001)

Yasutaka Igarashi：“超短光脉冲 CDMA 的总色散补偿性能”IEEE TENCON。

Yashima H.and Kobayashi T.: "Optical CDMA with Time Hopping and Power Control for Multimedia Networks"Int.Symp.on Information Theory and Its Applications. vol.2. 544-547 (2000)

Yashima H. 和 Kobayashi T.：“多媒体网络中具有跳时和功率控制的光 CDMA”Int.Symp.on 信息理论及其应用。

Yasutaka Igarashi: "Ultrashort light pulse CDMA with simultaneous fiber dispersion and dispersion slope compensation"IEEE PACRIM Conference. (2001)

Yasutaka Igarashi：“具有同时光纤色散和色散斜率补偿的超短光脉冲CDMA”IEEE PACRIM 会议。

Yasutaka Igarashi: "FE-CDMA communication systems with EDFA"IEICE ITC-CSCC. (2001)

Yasutaka Igarashi：“采用 EDFA 的 FE-CDMA 通信系统”IEICE ITC-CSCC。