Simple and robust symbol rate estimation method for digital coherent optical receivers
作者: Sheng CuiWenjuan XiaJin ShangChangjian KeSongnian FuDeming Liu
作者单位: 1National Engineering Laboratory for Next Generation Internet Access System, Wuhan, Hubei 430074, China
2School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, China
刊名: Optics Communications, 2016, Vol.366 , pp.200-204
来源数据库: Elsevier Journal
DOI: 10.1016/j.optcom.2015.12.068
关键词: Coherent communicationsDynamic optical networkSymbol rate estimationChromatic dispersion estimationPolarization mode dispersionDigital signal processing
原始语种摘要: Abstract(#br)A novel symbol rate estimation (SRE) technique utilizing the clock tone (CT) obtained by Godard timing recovery algorithm is proposed. By this technique, the known sampling rate of the analog-to-digital converter (ADC) in digital coherent optical receivers can used as a reference to directly determine the unknown signal symbol rate. The impact of polarization mode dispersion (PMD) on the CT magnitude can be mitigated by using the hybrid correlation function (HCF) consisting of both auto-correlation function (ACF) and cross-correlation function (XCF) of the received signal spectrum, while the chromatic dispersion (CD) impact can be mitigated by adaptive CD compensation techniques. This technique is simple, accurate, applicable to advanced modulation formats commonly used, and...
全文获取路径: Elsevier  (合作)
影响因子:1.438 (2012)

  • digital 数字的
  • optical 光学的
  • robust 牢固的
  • estimation 估计
  • symbol 符号
  • technique 技术
  • unknown 不知道的
  • processing 加工
  • accurate 精确的
  • dispersion 分散