Extended Hamming and BCH soft decision decoders for mobile data applications

Author

Tapp, Thomas L. ; Luna, Amjad A. ; Wang, Xiao-an ; Wicker, Stephen B.

Author_Institution

Rockwell Int. Corp., Cedar Rapids, IA, USA

Volume

47

Issue

3

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

333

Lastpage

337

Abstract

A methodology is presented for the design and development of efficient trellis-based soft decision decoders for extended Hamming and BCH codes. A new metric for noncoherent discriminator detection is proposed that substantially improves the performance of trellis-based decoders over additive white Gaussian noise (AWGN) channels. Minimal edge trellises are then presented for the class of extended Hamming codes and the (32, 21) extended BCH code. The latter is in extensive use in narrow-band wireless data systems. An automatic request (ARQ) protocol is described that allows the soft decision decoders to outperform their hard decision counterparts in both reliability and throughput

Keywords

AWGN channels; BCH codes; Hamming codes; Viterbi decoding; automatic repeat request; block codes; continuous phase modulation; data communication; discriminators; land mobile radio; protocols; signal detection; trellis codes; ARQ protocol; AWGN channels; BCH soft decision decoders; CPM; Viterbi algorithm; additive white Gaussian noise; automatic request protocol; block codes; extended BCH codes; extended Hamming codes; extended Hamming soft decision decoder; minimal edge trellises; mobile data applications; narrow-band wireless data systems; noncoherent discriminator detection; performance; reliability; throughput; trellis-based soft decision decoders; AWGN; Additive white noise; Automatic repeat request; Block codes; Data systems; Fading; Iterative decoding; Narrowband; Protocols; Throughput;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.752809

Filename

752809