Title :
Performance of ATM networks under hybrid ARQ/FEC error control scheme
Author :
Kousa, Maan A. ; Elhakeem, Ahmed K. ; Yang, Hui
Author_Institution :
Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
fDate :
12/1/1999 12:00:00 AM
Abstract :
In ATM networks, fixed-length cells are transmitted. A cell may be discarded during the transmission due to buffer overflow or detection of errors. Cell discarding seriously degrades transmission quality. This paper analyzes a hybrid automatic repeat request/forward error control (ARQ/FEC) cell-loss recovery scheme that is applied to virtual circuits (VCs) of ATM networks. FEC is performed based on a simple single-parity code, while a Go-Back-N ARQ is employed on top of that. Both throughput efficiency and reliability analysis of the hybrid scheme are presented. In the process we investigate the interactive effects of the network parameters (number of transit nodes, traffic intensity, ARQ packet length, …) on the performance. The analysis provides a method for optimizing the FEC code size for a given network specification
Keywords :
asynchronous transfer mode; automatic repeat request; forward error correction; telecommunication network reliability; ATM networks; buffer overflow; cell discarding; cell-loss recovery scheme; fixed-length cells; go-back-N ARQ; hybrid ARQ/FEC error control scheme; hybrid automatic repeat request/forward error control; interactive effect; network specification; packet length; reliability analysis; single-parity code; throughput efficiency; traffic intensity; transit nodes; transmission quality; virtual circuits; Automatic repeat request; B-ISDN; Buffer overflow; Circuits; Cross layer design; Degradation; Error correction; Forward error correction; Telecommunication traffic; Throughput;
Journal_Title :
Networking, IEEE/ACM Transactions on
