Title :
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
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;
Conference_Titel :
Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on
Conference_Location :
Boston, MA
DOI :
10.1109/ICC.1989.49800
