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- Börjeson, Erik,1984Chalmers tekniska högskola,Chalmers University of Technology (author)
VLSI Implementations of Carrier Phase Recovery Algorithms for M-QAM Fiber-Optic Systems
- Article/chapterEnglish2020
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- 2020
- electronicrdacarrier
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- LIBRIS-ID:oai:research.chalmers.se:d5fe833b-9a2c-4c50-aa18-7aea047bd79e
- https://doi.org/10.1109/JLT.2020.2976166DOI
- https://research.chalmers.se/publication/515643URI
- https://research.chalmers.se/publication/518543URI
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- Language:English
- Summary in:English
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- We present circuit implementations of blind phase search (BPS) carrier phase recovery (CPR) for M-QAM coherent optical receivers and highlight some BPS algorithm modifications necessary to obtain efficient VLSI circuits. In addition, we show how three key design parameters (input word length, number of test phases, and type and size of averaging window) affect the resulting implementation. To study design tradeoffs, we develop BPS CPR circuit netlists for a 32-GBaud system, using a 22-nm CMOS process technology: Our implementations reach energy efficiencies of around 1 pJ/bit for 16QAM up to 3 pJ/bit for 256QAM, at an SNR penalty of approximately 0.25 dB at a BER of 10^(−2). Furthermore, we present a circuit implementation of pilot-symbol-aided CPR, reaching 0.38 pJ/bit and 0.34 pJ/bit for 16QAM and 256QAM, respectively, at a slightly higher SNR penalty. The two CPR methods are also evaluated in terms of silicon area and scaling to higher-order modulation formats.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Kommunikationssystem hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Communication Systems hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Inbäddad systemteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Embedded Systems hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Signalbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Signal Processing hsv//eng
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- Fougstedt, Christoffer,1990Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)chrfou (author)
- Larsson-Edefors, Per,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)perla (author)
- Chalmers tekniska högskola (creator_code:org_t)
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- In:Journal of Lightwave Technology38:14, s. 3616-36230733-87241558-2213
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