An MLSE receiver for electronic dispersion compensation of OC-192 fiber links

Hyeon Min Bae, Jonathan B. Ashbrook, Jinki Park, Naresh R. Shanbhag, Andrew C. Singer, Sanjiv Chopra

Research output: Contribution to journalArticlepeer-review


A maximum-likelihood sequence estimation (MLSE) receiver is fabricated to combat dispersion/intersymbol interference (chromatic and polarization mode), noise (optical and electrical), and nonlinearities (e.g., fiber, receiver photodiode, or laser) in OC-192 metro and long-haul links. The MLSE receiver includes a variable gain amplifier with 40-dB gain range and 7.5-GHz 3-dB bandwidth, a 12.5-Gb/s 4-bit analog-to-digital converter, a dispersion-tolerant phase-locked loop, a 1:8 demultiplexer, and a digital equalizer implementing the MLSE algorithm. The MLSE receiver achieves more than 50 % reach extension at signal-to-noise levels of interest as compared to conventional clock data recovery systems.

Original languageEnglish (US)
Article number1717677
Pages (from-to)2541-2553
Number of pages13
JournalIEEE Journal of Solid-State Circuits
Issue number11
StatePublished - Nov 2006


  • A/D converter (ADC)
  • Clock data recovery (CDR)
  • Demultiplexer (DEMUX)
  • Electronic dispersion compensation (EDC)
  • Electronic post-detection equalization (EDE)
  • G.709 optical transport network (OTN)
  • High-speed ASIC

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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