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• W3108806947 abstract "We investigate a single-antenna multi-user multi-relay interference network, where multiple source nodes simultaneously communicate with their respective destination nodes via half-duplex decode-and-forward relays. To ensure fairness among users, we consider a power allocation strategy to maximize the worst-case energy efficiency (EE) of all users for a fixed relay assignment. The resulting optimization problem turns out to be non-convex. Different from those in the literature, our method here is an iterative algorithm where two geometric programs (GPs) are solved in each iteration, one producing an upper-bound to the solution of the original problem and the other providing a feasible lower-bound. Moreover, the upper-bound GP approaches the original problem asymptotically. Our algorithm also works for the problem arising in the non-interfering (orthogonal) transmission, which was previously solved as a fractional program. Numerical results reveal that non-orthogonal transmission outperforms orthogonal transmission in terms of the worst-case EE at low and medium signal-to-noise ratios." @default.
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• W3108806947 date "2021-03-01" @default.
• W3108806947 modified "2023-09-26" @default.
• W3108806947 title "Energy-Efficiency Fairness of Interference Multi-Relay Networks for Multi-User Communications" @default.
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• W3108806947 doi "https://doi.org/10.1109/lcomm.2020.3041210" @default.
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