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- W2762290640 abstract "We consider uplink transmission for a massive multiuser multiple-input multiple-output (MU-MIMO) system in which the base station (BS) is equipped with a mixed analog-to-digital converter (ADC) architecture. In this architecture, a portion of the antennas at the BS is connected to low-power one-bit ADCs while the other is fed to power-hungry high-resolution ADCs. By taking into account the mixed-ADC architecture, we derive a closed-form expression for the sum spectral efficiency (SE) when maximum ratio combining (MRC) detection is employed at the BS. Then, we formulate an optimization problem to determine, for a given power budget at the BS, what is the optimal distribution of one-bit and high-resolution ADCs that maximizes the sum SE. Interestingly, it is shown that in most realistic scenarios, using only one-bit ADCs provides the best spectral efficiency for a given power budget constraint." @default.
- W2762290640 created "2017-10-20" @default.
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- W2762290640 date "2017-12-01" @default.
- W2762290640 modified "2023-10-16" @default.
- W2762290640 title "Spectral Efficiency under Energy Constraint for Mixed-ADC MRC Massive MIMO" @default.
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- W2762290640 doi "https://doi.org/10.1109/lsp.2017.2761356" @default.
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