Performance analysis for a new automatic error control system for overcoming turbulent fading errors for wireless ATM networks
This paper suggests and analyzes the performance of a new wireless ATM adaptive error control system, which can be used in wireless ATM networks to improve quality of service in keeping the cell loss under a certain predefined limit and reducing the average delay of cell encoding. The new system is based on multi-level forward error correction (FEC), and specifically the Bose-Chaudhuri-Hocqenghem (BCH) code, which has multiple error correcting capability and a wide class of block codes, to overcome random errors. Realistic error patterns caused by multipath turbulent fading are analytically approximated and applied to the suggested system. Performance analysis for the new system showed that it improves cell loss rate to a value of less than 10/sup -9/ in case of non-fading and it keeps the average cell loss close to a reasonable value (approximately 10/sup -7/) in case of fading, while maintaining an average encoding delay considerably less than the delay of a system using a fixed BCH correction capability.