Abstract
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 language | English |
|---|---|
| Article number | 1717677 |
| Pages (from-to) | 2541-2553 |
| Number of pages | 13 |
| Journal | IEEE Journal of Solid-State Circuits |
| Volume | 41 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2006 |
Keywords
- 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
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