Achieving flexibility in a Viterbi decoder DSP coprocessor

Author

Hocevar, Dale E. ; Gatherer, Alan

Author_Institution

DSP Solutions R&D Center, Texas Instrum. Inc., Dallas, TX, USA

Volume

5

fYear

2000

fDate

2000

Firstpage

2257

Abstract

A Viterbi decoder hardware implementation suitable for wireless cellular applications is presented. This decoder is extremely flexible, both in the codes it handles, and in its system interface. Capabilities include multiple constraint lengths, multiple code rates, arbitrary frame size, puncturing and code polynomials. This paper discusses aspects of the implementation for which achieving this flexibility proved to be difficult. With a data throughput rate of 2.5 Mbps it is an ideal solution for 3rd generation base station architectures operating in conjunction with a DSP

Keywords

Viterbi decoding; cellular radio; coprocessors; digital radio; digital signal processing chips; 2.5 Mbit/s; 3rd generation base station architectures; Viterbi decoder DSP coprocessor; Viterbi decoder hardware implementation; code polynomials; data throughput rate; digital cellular systems; frame size; multiple code rates; multiple constraint lengths; puncturing codes; system interface; wireless cellular applications; Base stations; Computer architecture; Convolutional codes; Coprocessors; Decoding; Digital signal processing; Hardware; Switches; Throughput; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd

Conference_Location

Boston, MA

ISSN

1090-3038

Print_ISBN

0-7803-6507-0

Type

conf

DOI

10.1109/VETECF.2000.883265

Filename

883265