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We investigate the performance of an efficient frame-based two-dimensional frequency-time grid (FTG) allocation algorithm for OFDM-based wireless systems in a multiuser and multirate service environment. The FTG scheduling algorithm is performed every OFDM frame, allocating each frequency-time grid to different users according to both channel state information (CSI) and users' QoS constraints. The performance of the frame-based FTG algorithm is compared with other algorithms regarding OFDM systems and the results show that the system using the proposed FTG algorithm has significantly lower outage probability and higher throughput which is very near the upper bound (maximum allocation method).
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on (Volume:1 )
Date of Conference: 27-29 June 2004