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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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Published on: March 13, 2017

Digital self-coherent detection.

Xiang Liu1, S Chandrasekhar, Andreas Leven

  • 1Bell Laboratories, Alcatel-Lucent, 791 Holmdel-Keyport Road, Holmdel, New Jersey 07733, USA. xliu20@alcatel-lucent.com

Optics Express
|June 11, 2008
PubMed
Summary
This summary is machine-generated.

Digital self-coherent detection of differential phase-shift keyed (DPSK) signals is advancing rapidly. New digital signal processing techniques enhance receiver sensitivity and enable compensation for transmission impairments.

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Area of Science:

  • Optical Communications
  • Digital Signal Processing

Background:

  • Review of digital self-coherent detection for differential phase-shift keyed (DPSK) signals.
  • Focus on orthogonal differential direct detection combined with high-speed analog-to-digital conversion and digital signal processing (DSP).

Purpose of the Study:

  • To present recent advancements in digital self-coherent detection of DPSK signals.
  • To highlight techniques for receiver sensitivity enhancement and impairment compensation.

Main Methods:

  • Data-aided multisymbol phase estimation for improved receiver sensitivity.
  • Unified detection schemes for multi-level DPSK signals.
  • Optical field reconstruction and adaptive DSP for polarization de-multiplexing and dispersion compensation.

Main Results:

  • Demonstration of techniques enhancing receiver sensitivity.
  • Capability to compensate for linear and nonlinear transmission impairments using signal field information.
  • Development of adaptive DSP for simultaneous electronic polarization de-multiplexing and polarization-mode dispersion compensation.

Conclusions:

  • Digital self-coherent detection offers advanced capabilities for DPSK signal processing.
  • DSP enables significant improvements in receiver performance and transmission compensation.