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In this paper, the authors propose a decomposition-based joint subcarrier and power allocation algorithm for the downlink OFDM system, which maximizes the system throughput while maintaining each user's minimum data rate requirement. According to the user-centric decomposition, the proposed algorithm employs a completely novel and distributed architecture for the allocation problem by separating it into the master problem and the sub-problems. While the users assist in the sub-problems, the computational complexity and feedback overhead are reduced remarkably. Numerical results show that their algorithm provides high throughput in various wireless environments with much lower feedback overhead.
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