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• W3150028205 abstract "In this work, a resource allocation problem is investigated for a relay-based multiuser cooperative orthogonal frequency division multiple access (OFDMA) uplink system, considering a very large antenna array at the base station and nonlinear power amplifiers (PAs) in both user and relay nodes. Firstly, a theoretical characterization of the considered scenario is performed. Then, some analytical expressions for the nonlinear distortion (NLD) variance and the PA constant of a third-order polynomial PA are derived, as well as the instantaneous signal-to-noise ratio (SNR) of the considered system is calculated. Then, a low-complexity suboptimal relay selection and subcarrier allocation technique is proposed for the considered scenario based on the developed expressions. Numerical simulation results are presented to validate the derived expressions and to evaluate the performance of the proposed technique." @default.
• W3150028205 created "2021-04-13" @default.
• W3150028205 creator A5041859030 @default.
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• W3150028205 date "2021-07-01" @default.
• W3150028205 modified "2023-09-25" @default.
• W3150028205 title "Multiuser Cooperative OFDMA Uplink With Nonlinear Power Amplifiers: Theoretical Characterization and Resource Allocation" @default.
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• W3150028205 doi "https://doi.org/10.1109/tcomm.2021.3070041" @default.
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