A Reconfigurable Viterbi Traceback for Implemenation on Turbo Decoding Array

Author

Ahmed, Imran ; Arslan, Tughrul

Author_Institution

Sch. of Electr.on. & Eng., Edinburgh Univ., Edinburgh

fYear

2006

fDate

24-27 Sept. 2006

Firstpage

107

Lastpage

108

Abstract

The trace back operation as used in Viterbi decoding is presented. The trace back is used for a new large constraint length, soft decision Viterbi decoder designed to be implemented reusing components of turbo decoding array. The Viterbi decoder can be reconfigured for standards such as CDMA2000, WCDMA (UMTS), ADSL, IEEE 802.11 and GSM. The proposed trace back operation supports all of these multiple standards. The Viterbi decoding is made reconfigurable between different trellis types, constraint lengths and rates that can be reconfigured for the desired standard. The reconfigurable fabric is implemented as a subset of turbo decoder array on a 180 nm UMC process technology.

Keywords

Viterbi decoding; trellis codes; turbo codes; CDMA2000; GSM; IEEE 802.11; UMC process technology; Viterbi traceback operation; WCDMA; constraint lengths; reconfigurable Viterbi decoding; reconfigurable fabric implementation; reconfigurable trace back processing; size 180 nm; soft decision Viterbi decoder design; trellis structure; turbo decoding array; 3G mobile communication; Buildings; Decoding; Fabrics; GSM; History; Multiaccess communication; Random access memory; Read-write memory; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

SOC Conference, 2006 IEEE International

Conference_Location

Taipei

Print_ISBN

0-7803-9781-9

Electronic_ISBN

0-7803-9782-7

Type

conf

DOI

10.1109/SOCC.2006.283858

Filename

4063027