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- W4387029234 abstract "Analog beamforming with broadband large-scale antenna arrays in millimeter wave (mmWave) multiple input multiple output (MIMO) systems faces the beam squint problem. In this paper, we first investigate the sensitivity of analog beamforming to subarray spatial separations in widebandmmWave systems using hybrid arrays, and propose optimized subarray separations. We then design improved analog beamforming after phase compensation based on Zadoff-Chu (ZC) sequence to flatten the frequency response of radio frequency (RF) equivalent channel. Considering a single-carrier frequency-domain equalization (SC-FDE) scheme at the receiver, we derive low-complexity linear zero-forcing (ZF) and minimum mean squared error (MMSE) equalizers in terms of output signal-to-noise ratio (SNR) after equalization. Simulation results show that the improved analog beamforming can effectively remove frequency-selective deep fading caused by beam squint, and achieve better bit-error-rate performance compared with the conventional analog beamforming." @default.
- W4387029234 created "2023-09-26" @default.
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- W4387029234 date "2023-01-01" @default.
- W4387029234 modified "2023-09-26" @default.
- W4387029234 title "Optimal Design of Wideband mmWave LoS MIMO Systems Using Hybrid Arrays with Beam Squint" @default.
- W4387029234 doi "https://doi.org/10.1587/transcom.2023ebp3073" @default.
- W4387029234 hasPublicationYear "2023" @default.
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