Title :
On the performance of hybrid FEC/ARQ systems using rate compatible punctured turbo (RCPT) codes
Author :
Rowitch, Douglas N. ; Milstein, Laurence B.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
This paper introduces a hybrid forward-error correction/automatic repeat-request (ARQ) system that employs rate compatible punctured turbo (RCPT) codes to achieve enhanced throughput performance over a nonstationary Gaussian channel. The proposed RCPT-ARQ system combines the performance of turbo codes with the frugal use of incremental redundancy inherent in the rate compatible punctured convolutional codes of Hagenauer (1988). Moreover, this paper introduces the notion of puncturing the systematic code symbols of a turbo code to maximize throughput at signal-to-noise ratios (SNRs) of interest. The resulting system provides both an efficient family of achievable code rates at middle to high SNR and powerful low-rate error correction capability at low SNR
Keywords :
AWGN channels; automatic repeat request; convolutional codes; forward error correction; turbo codes; ARQ protocol; RCPT-ARQ system; SNR; additive white Gaussian channel; code rates; forward-error correction/automatic repeat-request; hybrid FEC/ARQ systems; incremental redundancy; low-rate error correction; nonstationary Gaussian channel; rate compatible punctured convolutional codes; rate compatible punctured turbo codes; signal-to-noise ratio; systematic code symbols puncturing; throughput performance; turbo codes; Automatic repeat request; Convolution; Convolutional codes; Forward error correction; Gaussian channels; Protocols; Redundancy; Throughput; Transmitters; Turbo codes;
Journal_Title :
Communications, IEEE Transactions on
