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- W2528950629 abstract "We study the interference coordination in massive-MIMO heterogeneous network. In this scene, macro-users (MUEs) are distributed in clusters and pico-cells are separated from MUEs. There exists the inter-tier interference and it is hard to implement interference coordination since the instantaneous channel state information (CSI) between macro-base station (MBS) and pico-users (PUEs) is hard to obtain. In this circumstance, we propose a two-tier precoding method based on the statistical CSI between MBS and pico-base station (PBS) with the minimum mean square error (MMSE) criterion to form deeper nulling for pico-cells close to MBS. In our method, the outer precoder is designed to mitigate the inter-cluster and the inter-tier interference, and the inner precoder aims to suppress the intra-cluster interference. Simulation results show that our statistical CSI based on the MMSE precoding scheme could mitigate the inter-tier interference efficiently in channels with small spatial angular spread. The proposed method could achieve better throughput than other precoding methods for PUEs close to MBS." @default.
- W2528950629 created "2016-10-14" @default.
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- W2528950629 date "2016-07-01" @default.
- W2528950629 modified "2023-09-25" @default.
- W2528950629 title "Inter-Tier Interference Coordination in Massive-MIMO System based on Statistical Channel Information" @default.
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- W2528950629 doi "https://doi.org/10.1109/iccchinaw.2016.7586720" @default.
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