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限幅OFDM在光通信系统中的应用 被引量：1

Application of clipped optical OFDM in multimode optical communications
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摘要 将OFDM技术应用于光通信领域是近几年研究的热点.但由于射频信号的特点,OFDM信号不能直接应用于传统光通信系统中,最近许多文章都在讨论和提出其解决方案,基于限幅OFDM信号(Clipped optical OFDM)的多模光通信系统,就是其中之一.对输入信号进行Hermitian变换,使其实数化;通过门限电平舍去信号负项;对于限幅带来的噪声,可通过选择奇数载波传输来将其消除.限幅OFDM技术对传统光传输系统改变较小,且较基于直流偏压OFDM(DC bias OFDM),在光功率利用率上有7.98 dB提升. 将OFDM技术应用于光通信领域是近几年研究的热点.但由于射频信号的特点,OFDM信号不能直接应用于传统光通信系统中,最近许多文章都在讨论和提出其解决方案,基于限幅OFDM信号(Clipped optical OFDM)的多模光通信系统,就是其中之一.对输入信号进行Hermitian变换,使其实数化;通过门限电平舍去信号负项;对于限幅带来的噪声,可通过选择奇数载波传输来将其消除.限幅OFDM技术对传统光传输系统改变较小,且较基于直流偏压OFDM(DC bias OFDM),在光功率利用率上有7.98 dB提升.
作者 郝耀鸿 王荣
机构地区 解放军理工大学通信工程学院
出处 《兰州大学学报（自然科学版）》 CAS CSCD 北大核心 2010年第S1期212-214,218,共4页 Journal of Lanzhou University(Natural Sciences)
关键词 正交频分复用 光通信 强度调制/直接检测 OFDM optical communications intensity modulated direct detection
分类号 N55 [自然科学总论]
  • 相关文献

参考文献10

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共引文献10

同被引文献9

  • 1Shieh W. Coherent optical OFDM: has its time come [J]. Journal of Optical Networking, 2008, 7(3): 234-255.
  • 2Kobayash T, Sano A, Yamada E. Electro-optically subcarrier multiplexed ll0Gb/s OFDM signal transmission over 80km SMF without dispersion compensation [J]. Elect Lett, 2008, 44: 225-226.
  • 3Xianming Zhu, Shiva Kumar. Nonlinear phase noise in coherent optical OFDM transmission systems [J]. Optics Express, 2010, 18 (7): 7347-7360.
  • 4A J Lowery. Fiber nonlinearity pre- and post-compensation for long-haul optical links using OFDM [J]. Opt. Expr, 2007, 15: 12965-12970.
  • 5Brian S Krongold, Yan Tang, William Shieh. Fiber Nonlinearity Mitigation by PAPR Reduction in Coherent Optical OFDM Systems via Active Constellation Extension [A]. ECOC [C]. 2008, 5: 157-158.
  • 6W Shieh, H Bao, Y Tang. Coherent optical OFDM: theory and design [J]. Opt. Express, 2008, 16: 841-859.
  • 7J Armstrong, A J Lowery. Power efficient optical OFDM [J]. Electronics Letters, 2006.42.
  • 8Y Tang, W Shieh. Optimum Design for RF-to-Optical Up-Converter in Coherent Optical OFDM Systems [J]. IEEE Photonies Technology Letters, 2007, 19: 483-485.
  • 9郝耀鸿,李玉权,王荣.OFDM在长距离光传输系统色散补偿中的应用[J].电路与系统学报,2010,15(5):71-73. 被引量：7

引证文献1

二级引证文献1

兰州大学学报（自然科学版）
2010年 第S1期

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