Hybrid Type-II ARQ Schemes with Scheduling for Packet Data Transmission over Rayleigh Fading Channels

Yong Li , Arne Svensson and Sorour Falahati Communication Systems Group, Department of Signals and Systems, Chalmers University of Technology, SE-412 96 Göteborg, Sweden, Tel.: +46 31 772 1767, Fax: +46 31 772 1748, Email:fFrank.Li, Arne.Svensson, [email protected] Abstract | The performance of packet data transmission where several blocks are combined together into a physical layer frame for simultaneous transmission is studied in this paper. Three hybrid type-II ARQ schemes based upon HRO-RCPC codes are presented and their throughput is investigated on Rayleigh fading channels with different block lengths. The simulation results show that scheme 5 1 has the best performance and that there exists an optimum range of block size. To implement scheme 5 in our frame composition, three basic scheduling mechanisms are proposed and evaluated and the conclusion shows that an appropriate scheduling discipline may be employed for the different specific service requirements.