首页> 外文期刊>Optics Letters >Ultrawideband compressed sensing of arbitrary multi-tone sparse radio frequencies using spectrally encoded ultrafast laser pulses
【24h】

Ultrawideband compressed sensing of arbitrary multi-tone sparse radio frequencies using spectrally encoded ultrafast laser pulses

机译:使用频谱编码的超快激光脉冲对任意多音调稀疏射频进行超宽带压缩感测

获取原文
获取原文并翻译 | 示例
           

摘要

We demonstrate a photonic system for pseudorandom sampling of multi-tone sparse radio-frequency (RF) signals in an 11.95-GHz bandwidth using < 1% of the measurements required for Nyquist sampling. Pseudorandom binary sequence (PRBS) patterns are modulated onto highly chirped laser pulses, encoding the patterns onto the optical spectra. The pulses are partially compressed to increase the effective sampling rate by 2.07x, modulated with the RF signal, and fully compressed yielding optical integration of the PRBS-RF inner product prior to photodetection. This yields a 266x reduction in the required electronic sampling rate. We introduce a joint-sparsity-based matching-pursuit reconstruction via bagging to achieve accurate recovery of tones at arbitrary frequencies relative to the reconstruction basis. (C) 2015 Optical Society of America
机译:我们演示了一个光子系统,用于使用11.3 GHz带宽中的不足1%的奈奎斯特采样,对多音色稀疏射频(RF)信号进行伪随机采样。伪随机二进制序列(PRBS)模式被调制到高度chi激光脉冲上,然后将模式编码到光谱上。对脉冲进行部分压缩以将有效采样率提高2.07倍,并使用RF信号进行调制,并在进行光检测之前将其完全压缩以产生PRBS-RF内积的光学积分。这样可将所需的电子采样率降低266倍。我们通过装袋引入基于联合稀疏度的匹配追求重建,以实现相对于重建基础的任意频率的音调的准确恢复。 (C)2015年美国眼镜学会

著录项

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