Unequal error protection design using convolutional codes

Author

Desai, Vip ; Classon, Brian ; Blankenship, Yufei Wu ; Johnson, John

Author_Institution

Motorola Labs., Schaumburg, IL, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

836

Abstract

The introduction of adaptive multi-rate (AMR) speech coders in wireless standards, such as GSM, imposes new challenges for forward error correction (FEC) design. Traditional FEC techniques of providing unequal error protection (UEP) may not maximize performance for a given set of design requirements, such as complexity limits. This paper introduces a new FEC technique that improves error correction performance while satisfying complexity constraints. This technique is applied to the new wideband AMR standard for a performance and complexity comparison.

Keywords

adaptive codes; cellular radio; channel coding; code standards; computational complexity; convolutional codes; forward error correction; speech coding; AMR speech coders; FEC; GSM; UEP; adaptive multi-rate speech coders; complexity constraints; convolutional codes; error correction performance; unequal error protection design; wideband standard; wireless standards; AWGN; Bit error rate; Code standards; Convolutional codes; Decoding; Degradation; Error correction codes; Forward error correction; GSM; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.996973

Filename

996973