A real-time high-throughput LDPC decoder for IEEE 802.3an standard

Jui Hui Hung*, Li Wei Kao, Sau-Gee Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The existing LDPC decoders are mostly based on the belief-propagation (BP) algorithms, due to good BER performances. However, they demand large chip areas. This paper proposes a high-throughput LDPC decoder based on the bit-flipping algorithms, for the (2048, 1723) RS-LDPC code adopted in the IEEE 802.3an standard. High decoding performances and low iteration numbers are achieved by introducing a strategy of flipping low-correlation bits and an additional syndrome vote scheme. As a result, the decoding performance is very close to the most popular BP-based min-sum algorithm (MSA) but with much lower computational complexity. Besides, the decoder achieves high hardware utilization with realtime processing capability. Synthesized with UMC 90nm process, the decoder chip area, throughput and average power dissipation are 1.42M gates, 16Gbps and 368mW, respectively, at 500MHz clock rate. Compared with existing BP-based designs, it has much smaller chip area and lower power dissipation, with comparable performances.

Original languageEnglish
Title of host publication2010 IEEE 71st Vehicular Technology
DOIs
StatePublished - 30 Jul 2010
Event2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring - Taipei, Taiwan
Duration: 16 May 201019 May 2010

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Conference

Conference2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring
CountryTaiwan
CityTaipei
Period16/05/1019/05/10

Keywords

  • 802.3an standard
  • Channel coding
  • Hardware design
  • LDPC

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    Hung, J. H., Kao, L. W., & Chen, S-G. (2010). A real-time high-throughput LDPC decoder for IEEE 802.3an standard. In 2010 IEEE 71st Vehicular Technology [5493796] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2010.5493796