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- W4385156230 abstract "In this paper, a nonlinear quantized precoding scheme for low-resolution digital-analog converters (DACs) in a massive multiple-input multiple-output (MIMO) system is proposed. The nonlinear quantized precoding determines transmit antenna outputs with a transmit symbol and channel state information. In a full-digital massive MIMO system, low-resolution DACs are used to suppress power consumption. Conventional precoding algorithms for low-resolution DACs do not optimize transmit antenna gains individually. Thus, in this paper, a precoding scheme that optimizes individual transmit antenna gains as well as the DAC outputs is proposed. In the proposed scheme, the subarray of massive MIMO antennas is treated virtually as a single antenna element. Numerical results obtained through computer simulation show that the proposed precoding scheme achieves bit error rate performance close to that of the conventional precoding scheme with much smaller antenna gains on a CDL-A channel." @default.
- W4385156230 created "2023-07-24" @default.
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- W4385156230 date "2023-01-01" @default.
- W4385156230 modified "2023-09-27" @default.
- W4385156230 title "Gain and Output Optimization Scheme for Block Low-Resolution DACs in Massive MIMO Downlink" @default.
- W4385156230 doi "https://doi.org/10.1587/transcom.2023ebp3016" @default.
- W4385156230 hasPublicationYear "2023" @default.
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