Performance of Hybrid ARQ Schemes over Multipath Block Fading Channels
M. Wissem El Bahri, Hatem Boujemâa, Mohamed Siala · 2005
The use of Hybrid Automatic Repeat reQuest (HARQ) for error correction has been given wide attention in the High Speed Downlink Packets Access (HSDPA) mode of the UMTS (3GPP TR 25.848 2001). This paper derives a theoretical analysis of the performance of Automatic Repeat reQuest (ARQ) and Type I Hybrid ARQ (HARQ I) over a block multipath Rayleigh fading channel. It is shown that the derived analytical results are in a good agreement with those obtained by computer simulations. Besides, simulation results of type II HARQ (HARQ II) with a code combining strategy is given in the same context.