Performance analysis of burst-mode receivers with clock phase alignment and forward error correction for GPON

  • Authors:

  • Bhavin J. Shastri;Julien Faucher;Noha Kheder;Ming Zeng;Nicholas Zicha;David V. Plant

  • Affiliations:

  • Photonic Systems Group, Department of Electrical & Computer Engineering, McGill University, Montreal, Canada H3A 2A7;PMC-Sierra, Inc., Ville Mont-Royal, Canada H3R 3L5;Photonic Systems Group, Department of Electrical & Computer Engineering, McGill University, Montreal, Canada H3A 2A7;Photonic Systems Group, Department of Electrical & Computer Engineering, McGill University, Montreal, Canada H3A 2A7;Photonic Systems Group, Department of Electrical & Computer Engineering, McGill University, Montreal, Canada H3A 2A7;Photonic Systems Group, Department of Electrical & Computer Engineering, McGill University, Montreal, Canada H3A 2A7

  • Venue:
  • Analog Integrated Circuits and Signal Processing
  • Year:
  • 2009

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Abstract

We experimentally demonstrate the performance analysis of burst-mode receivers (BMRx) in a 622 Mb/s 20-km gigabit-capable passive optical network (GPON) uplink. Our receiver features automatic phase acquisition using a clock phase aligner (CPA), and forward-error correction using (255, 239) Reed-Solomon (RS) codes. The BMRx provides instantaneous (0 preamble bit) phase acquisition and a packet-loss ratio (PLR) 驴6 for any phase step (卤2驴 rads) between consecutive packets, while also supporting more than 600 consecutive identical digits (CIDs). The receiver also accomplishes a 3-dB coding gain at a bit-error rate (BER) of 10驴10. The CPA makes use of a phase picking algorithm and an oversampling clock-and-data recovery circuit operated at 2脳 the bit rate. The receiver meets the GPON physical media dependent layer specifications defined in the ITU-T recommendation G.984.2 standard. We investigate the PLR performance of the system and quantify it as a function of the phase step between consecutive packets, received signal power, CID immunity, and BER, while also assessing the tradeoffs in preamble length, power penalty, and pattern correlator error resistance. We also study the impact of mode-partition noise in the GPON uplink in terms of the effective PLR and BER coding gain performance of the system. In addition, we demonstrate how the CPA and the RS(255, 239) codes can be used in tandem for dynamic burst-error correction giving reliable BERs in bursty channels.