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- W200734732 abstract "Large-scale array aided beamforming improves the spectral efficiency (SE) as a benefit of high angular resolution. When dual-beam downlink beamforming is applied to the train moving towards cell edge, the inter-beam ambiguity (IBA) increases as the directional difference between beams becomes smaller. An adaptive antenna activation based beamforming scheme was proposed to mitigate IBA. In the district near the base station (BS), all antenna elements (AEs) were activated to generate two beams. As the distance from the train to the BS increased, only the minimum number of AEs satisfying the resolution criterion would be activated. At the cell edge, one beam was switched off due to intolerable IBA. The proposed scheme can achieve SE gain to the non-adaptive scheme and show more robustness against the direction-of-arrival (DOA) estimation error." @default.
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- W200734732 date "2016-09-01" @default.
- W200734732 modified "2023-10-16" @default.
- W200734732 title "Adaptive antenna-activation based beamforming for large-scale MIMO communication systems of high speed railway" @default.
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- W200734732 doi "https://doi.org/10.1109/cc.2016.7582292" @default.
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