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VLSI design and implementation of high-speed Viterbi decoder

  • Yu Xin You*
  • , Jin Xiang Wang
  • , Feng Chang Lai
  • , Yi Zheng Ye
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a new architecture for high-speed Viterbi decoder with low power dissipation based on the modified T-algorithm and modified trace-back methods. The former algorithm is used to reduce the unnecessary operations in path metric computation, while the latter is adopted to reuse the already generated trace-back routes to reduce the times of trace-back operations, so the power consumption can be saved. High throughput and short decoding latency are achieved by parallel computation in the add-compare-select unit and pipeline structure in the survivor-memory-unit. The complexity of the (2,1,7) Viterbi decoder is about 50,000 gates with a decoding latency of 32 clock cycles, and an area of 3.88 mm2 including IO pad with a throughput of 200 Mb/s using 0.25 μm technology.

Original languageEnglish
Title of host publication2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings
EditorsLemin Li
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages64-68
Number of pages5
ISBN (Electronic)0780375475, 9780780375475
DOIs
StatePublished - 2002
Event1st International Conference on Communications, Circuits and Systems, ICCCAS 2002 - Chengdu, China
Duration: 29 Jun 20021 Jul 2002

Publication series

Name2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings

Conference

Conference1st International Conference on Communications, Circuits and Systems, ICCCAS 2002
Country/TerritoryChina
CityChengdu
Period29/06/021/07/02

Keywords

  • Decoder
  • T-algorithm
  • Trace-back
  • Viterbi

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