Title :
Analysis of memory and incremental redundancy ARQ schemes over a nonstationary channel
Author_Institution :
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
fDate :
9/1/1992 12:00:00 AM
Abstract :
A generalized type II automatic-repeat-request (ARQ) scheme using punctured convolutional coding on a two-state Markov model of a nonstationary channel is analyzed. A simple ARQ scheme with memory is also analyzed. It is shown that the simple memory ARQ scheme offers a substantial throughput improvement over a conventional ARQ scheme at severe channel conditions. Furthermore, the generalized type II ARQ scheme yields a better performance than the conventional type II ARQ scheme under all channel conditions, thus making it attractive for use over time-varying channels
Keywords :
Markov processes; convolutional codes; error correction codes; error detection codes; telecommunication channels; ARQ schemes; error detection; forward error correction; generalized type II automatic-repeat-request; incremental redundancy scheme; memory scheme; nonstationary channel; punctured convolutional coding; throughput; time-varying channels; two-state Markov model; Automatic repeat request; Block codes; Convolutional codes; Error analysis; Error correction; Forward error correction; Redundancy; Throughput; Time-varying channels; Transmitters;
Journal_Title :
Communications, IEEE Transactions on
