2020年8月3日
Adaptive equalization of transmitter and receiver IQ skew by multi-layer linear and widely linear filters with deep unfolding
Optics Express
- ,
- 巻
- 28
- 号
- 16
- 開始ページ
- 23478
- 終了ページ
- 23478
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/oe.395361
- 出版者・発行元
- The Optical Society
We propose a multi-layer cascaded filter architecture consisting of differently sized strictly linear (SL) and widely linear (WL) filters to compensate for the relevant linear impairments in optical fiber communications including in-phase/quadrature (IQ) skew in both transmitter and receiver by using deep unfolding. To control the filter coefficients adaptively, we adopt a gradient calculation with back propagation from machine learning with neural networks to minimize the magnitude of deviation of the filter outputs of the last layer from the desired state in a stochastic gradient descent (SGD) manner. We derive a filter coefficient update algorithm for multi-layer SL and WL multi-input multi-output finite-impulse response filters. The results of a transmission experiment on 32-Gbaud polarization-division multiplexed 64-quadrature amplitude modulation over a 100-km single-mode fiber span showed that the proposed multi-layer SL and WL filters with SGD control could compensate for IQ skew in both transmitter and receiver under the accumulation of chromatic dispersion, polarization rotation, and frequency offset of a local oscillator laser source.
- リンク情報
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- DOI
- https://doi.org/10.1364/oe.395361
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/32752344
- URL
- https://www.osapublishing.org/viewmedia.cfm?URI=oe-28-16-23478&seq=0
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85089132850&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85089132850&origin=inward
- ID情報
-
- DOI : 10.1364/oe.395361
- eISSN : 1094-4087
- PubMed ID : 32752344
- SCOPUS ID : 85089132850