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Adaptive Bandwidth Allocation for Downlink Ofdma Systems: A New Hybrid Approach for Bandwidth Allocation
並列摘要
Functionality and operation of Radio Resource Management (RRM) are deeply presented in this paper. Discussion of algorithms is also provided. We look mainly to solve the problem of dynamic subcarrier allocation algorithm for Orthogonal Frequency-division Multiple Access (OFDMA) systems. The Rate Adaptive optimization (RA) problem, which maximizes the sum of user data rates subject to total power constraint and individual guaranteed rates, is considered. We describe in this paper BABS (Bandwidth Allocation Based on SNR) algorithm and its different version, which are an intelligent dynamic subcarrier allocation algorithm. We compare the BABS and modified BABS algorithms. Simulation results underline the efficiency of this algorithm and show that the modified BABS gives better performance and results compared with the BABS algorithm
延伸閱讀
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