ABSTRACT
In an OFDM system, radio resources are allocated and managed to ensure optimum channel quality for customers. Using a subgroup approach, subscribers have been categorized into different groups based on channel quality. The resources allocated to a subgroup’s consumers are power allocation, capacity, and data rate. A simple algorithm The OFDMA multicast method, Frequency domAIN Subgroup algoriThm (FAST), is required to reduce the dimensionality of either subgroup creation problem and also the performance restrictions of basic multiplex data delivery strategies. FAST increases the number of allowable subgroups as well as seeks the best subgroup that outperforms the previous iteration. Throughput increases as a result of this approach due to increased system capacity. The simulation results demonstrate that such a system achieves near-optimal achievement with such a 112restricted computational load, and therefore, the greater the spectral efficiency, the more resources are assigned.
