DYNAMIC RATE SELECTION (DRS) SCHEME FOR UWB SYSTEMS SUPPORTING VIDEO MULTICAST SERVICES

摘要

This paper presents a dynamic rate selection (DRS) scheme to determine the transmission rate of video multicast services for ultra-wideband (UWB) systems. The DRS scheme utilizes the received signal quality of the beacon frame sent by each UWB device to estimate clients' location distribution. It then determines the best data rate to transmit the enhancement layer portion of the multicast video stream. Considering the limited processing power of the USB device, a decision tree is further proposed to reduce the computational complexity of the DRS. The performance of the DRS scheme is verified via computer simulation. Simulation results demonstrate the effective of the proposed DRS scheme in various conditions.