AN ERROR CONTROL SCHEME FOR HIQH-QUALITY, HIGH-SPEED PHS DATA COMMUNICATIONS

This article proposes an effective error control scheme, MODS-ARQ, for PHS data communications. This scheme is based on SR-ARQ, which was mo dified to increase the maximum transmission speed. The throughput effi ciencies achieved using the MODS-ARQ protocol were estimated by comput er simulations and laboratory tests. MODS-ARQ achieves a maximum trans mission speed of 29.2 kbit/s and more than 20 kbit/s under poor transm ission conditions. The proposed MODS-ARQ is a very effective and simpl e error control technique for use in designing a mobile data communica tions infrastructure based on PHS.