• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The mediterranean journal of electronics and communications >PILOT-AIDED ASYMMETRICALLY CLIPPED OPTICAL OFDM IN VISIBLE LIGHT COMMUNICATION
【24h】

PILOT-AIDED ASYMMETRICALLY CLIPPED OPTICAL OFDM IN VISIBLE LIGHT COMMUNICATION

机译：可见光通信中的先导辅助非对称钳位光学OFDM

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper we present a new pilot-aided asymmetrically clipped optical orthogonal frequency division multiplexing (PA-ACO-OFDM) signalling scheme for intensity modulation direct detection based visible light communications, in the transmission process, amplitude known pilot chips (PCs) are inserted prior to inverting negative chips (NC) into positive chips. At the receiver, PCs are used to detect and recover the NC, thus allowing complete recovery of the OFDM symbols. In this scheme we utilize the anti-asymmetry nature of the time-domain asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) signal to increase the data rate by up to 33%. A comparison between PA-ACO-OFDM, DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) schemes in terms of the optical power requirements is also presented. We show that the proposed system requires lower optical power compared to DCO-OFDM. Simulation results are presented and it is shown that in the proposed pilot-aided ACO-OFDM data rates are enhanced by reducing the time symbol duration. We also show that the power efficiency and the bit-error-rate performance of the new PA-ACO-OFDM can be enhanced by varying the amplitude of the pilot chips.
机译：在本文中，我们提出了一种新的用于基于强度调制直接检测的可见光通信的导频辅助不对称削波光学正交频分复用（PA-ACO-OFDM）信令方案，在传输过程中，插入了幅度已知的导频码片（PC）在将负片（NC）转换为正片之前。在接收器上，PC用于检测和恢复NC，从而可以完全恢复OFDM符号。在该方案中，我们利用时域非对称限幅光学正交频分复用（ACO-OFDM）信号的抗对称性，将数据速率提高了33％。还提出了PA-ACO-OFDM，DC偏置光正交频分复用（DCO-OFDM）方案之间在光功率要求方面的比较。我们表明，与DCO-OFDM相比，提出的系统需要更低的光功率。仿真结果表明，所提出的导频辅助ACO-OFDM数据速率可以通过减少时间符号持续时间来提高。我们还表明，通过改变导频码片的幅度，可以提高新型PA-ACO-OFDM的功率效率和误码率性能。

著录项

  • 来源
  • 作者

    Osama Saied; Zabih Ghassemlooy; Xuewu Dai; Hoa Le Minh; Wasiu O. Popoola; Shien-Kuei Liaw; Min. Zhang;

  • 作者单位

    Optical Communications Research Group, NCRLab, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK;

    Optical Communications Research Group, NCRLab, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK;

    Optical Communications Research Group, NCRLab, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK;

    Optical Communications Research Group, NCRLab, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK;

    institute for Digital Communications, School of Engineering, The University of Edinburgh;

    Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;

    The State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts & Telecommunications, Beijing;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    OFDM; visible light communications; bit error rate;

    机译：OFDM;可见光通信;误码率;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号