Low-power pre-decoding based viterbi decoder for tail-biting convolutional codes

Rami A. Abdallah, Seok Jun Lee, Manish Goel, Naresh R Shanbhag

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

Abstract

Low-power and high-throughput Viterbi decoder (VD) for tail-biting convolutional codes is presented in this paper. First, a low complexity radix-4 VD with enhanced decoding features such as end-state forcing and best-state trace back is presented. Second, simple predecoding is proposed to decrease the runtime of VD, resulting in significant power saving. The design is implemented in 0.9 V TI 45-nm CMOS process at 100 MHz for Long Term Evolution (LTE) [1] as application. More than 90% power saving is achieved with predecoding at a throughput of 120 Mbps and 0.2 dB SNR loss for 10-5 frame error rate.

Original languageEnglish (US)
Title of host publication2009 IEEE Workshop on Signal Processing Systems, SiPS 2009 - Proceedings
Pages185-190
Number of pages6
DOIs
StatePublished - 2009
Event2009 IEEE Workshop on Signal Processing Systems, SiPS 2009 - Tampere, Finland
Duration: Oct 7 2009Oct 9 2009

Publication series

NameIEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
ISSN (Print)1520-6130

Other

Other2009 IEEE Workshop on Signal Processing Systems, SiPS 2009
Country/TerritoryFinland
CityTampere
Period10/7/0910/9/09

Keywords

  • Add-compare-select
  • Long term evolution
  • Tail-biting convolutional code
  • Trellis decoding
  • Viterbi decoder

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Applied Mathematics
  • Hardware and Architecture

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