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- W2076177032 abstract "We study the power allocation problem for maximizing the sum rate in orthogonal frequency-division multiplexing systems, where multiple point-to-point links share a set of subcarriers. This problem is hard to solve, in general, due to its nonconvexity. In this letter, we characterize the conditions for the problem to be convex, in which case the problem can be solved efficiently using known algorithms such as gradient projection method. We validate our analysis through simulations." @default.
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- W2076177032 date "2014-09-01" @default.
- W2076177032 modified "2023-09-22" @default.
- W2076177032 title "On the Concavity of the Sum-Rate Function in OFDM Systems" @default.
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- W2076177032 doi "https://doi.org/10.1109/lcomm.2014.2334323" @default.
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