Compact, high-speed and high-coding-gain general purpose FEC encoder/decoder-NUFEC codec

Author

Kubota, Shuji ; Kato, Shuzo ; Ishitani, Tsunehachi ; Nagatani, Mitsuyoshi

Author_Institution

NTT Lab., Tokyo, Japan

fYear

1989

Firstpage

798

Abstract

A novel universal forward error correction (NUFEC) scheme, comprising direct high-coding-rate convolutional code generators and variable-rate Viterbi decoders, is proposed. To make this NUFEC scheme available in various communication systems, three kinds of CMOS VLSIs have been developed. They can operate up to 25 Mb/s and are easily applicable to various coding-rate convolutional codes. Furthermore, by using these NUFEC VLSIs, a compact, high-speed, and high-coding-gain FEC codec (NUFEC codec) has been developed. Experimental results on the Pe performance of this codec have shown powerful coding gains of 5.5, 4.5, 3.4, and 2.2 dB at Pe=1×10^-6 in coding rates of 1/2, 3/4, 7/8, and 15/16, respectively

Keywords

CMOS integrated circuits; VLSI; codecs; error correction codes; 25 Mbit/s; CMOS VLSI; NUFEC codec; communication systems; convolutional code generators; high speed codec; high-coding-gain FEC codec; novel universal forward error correction; variable-rate Viterbi decoders; Circuits; Codecs; Convolution; Convolutional codes; Decoding; Design methodology; Forward error correction; Large scale integration; Very large scale integration; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on

Conference_Location

Boston, MA

Type

conf

DOI

10.1109/ICC.1989.49800

Filename

49800