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ADAPTIVE RADIO RESOURCE ALLOCATION FOR DOWNLINK

Platform : DSP

IEEE Projects Years : 2007

This paper appears in: Communications, 2007. ICC '07. IEEE International Conference on Issue Date: 24-28 June 2007 AIM: Adaptive band width selector for Downlink of communication channel ABSTRACT The paper proposes an adaptive radio resource allocation (ARRA) algorithm for downlink OFDMA/SDMA systems with goals to achieve quality of service (QoS) satisfied and throughput maximized. The ARRA algorithm considers multiple service classes of multimedia traffic and their diverse QoS requirements. It contains two parts, a dynamic priority adjustment scheme and a priority-based greedy (PBG) algorithm. The dynamic priority adjustment scheme gives high priority to urgent users and dynamically adjust the value frame by frame based on users' QoS requirement and queue occupancy. The PBG algorithm allocates the radio resource iteratively according to a cost value to maximize the system throughput while allocating enough resource to high-priority users. Simulation results show that the ARRA algorithm outperforms the conventional algorithms in terms of system throughput under the satisfaction of QoS requirements. LEARNING OBJECTIVE: Study the PBG algorithm for communication channel INPUT: Wide range frequency signal OUTPUT: Bandwidth based frequency selectors APPLICATIONS: Communication engineering SOFTWARE TOOL USED: MATLAB 2007A

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