Efficient hybrid ARQ protocols with adaptive forward error correction

Author

Kallel, Samir

Author_Institution

Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada

Volume

42

Issue

234

fYear

1994

Firstpage

281

Lastpage

289

Abstract

In this paper, efficient stop-and-wait, go-back-N and selective-repeat hybrid ARQ protocols with adaptive forward error correction (AFEC) using convolutional coding are proposed and analyzed. The basic idea is to vary the coding rate for error correction according to system parameters, such as the signal-to-noise ratio, the round trip delay and the buffer size at the receiver, so as to maximize the throughput efficiency. The performances of the proposed ARQ protocols are evaluated for two channel models: a non-fading and an ideally-interleaved Rayleigh-fading additive white Gaussian noise channel. In all cases it is found that the hybrid ARQ protocols with AFEC yield a comparatively high throughput under all channel conditions

Keywords

convolutional codes; encoding; error correction codes; fading; protocols; random noise; telecommunication channels; white noise; AWGN; adaptive forward error correction; additive white Gaussian noise channel; buffer size; channel models; coding rate; convolutional coding; go-back-N protocol; hybrid ARQ protocols; ideally-interleaved Rayleigh-fading channel; nonfading channel; performance; receiver; round trip delay; selective-repeat hybrid protocol; signal-to-noise ratio; stop-and-wait protocol; system parameters; throughput efficiency; Automatic repeat request; Convolution; Convolutional codes; Delay; Error correction codes; Forward error correction; Performance evaluation; Protocols; Signal to noise ratio; Throughput;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.1994.577031

Filename

577031