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• W1634253120 abstract "This paper investigates the achievable sum-rate of uplink massive multiple-input multiple-output (MIMO) systems considering a practical channel impairment, namely, aged channel state information (CSI). Taking into account both maximum ratio combining (MRC) and zero-forcing (ZF) receivers at the base station, we present tight closed-form lower bounds on the sum-rate for both receivers, which provide efficient means to evaluate the sum-rate of the system. More importantly, we characterize the impact of channel aging on the power scaling law. Specifically, we show that the transmit power of each user can be scaled down by 1/√(M), which indicates that aged CSI does not affect the power scaling law; instead, it causes only a reduction on the sum rate by reducing the effective signal-to-interference-and-noise ratio (SINR)." @default.
• W1634253120 created "2016-06-24" @default.
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• W1634253120 date "2015-06-01" @default.
• W1634253120 modified "2023-10-18" @default.
• W1634253120 title "Effect of channel aging on the sum rate of uplink massive MIMO systems" @default.
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• W1634253120 doi "https://doi.org/10.1109/isit.2015.7282650" @default.
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