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—In the paper, a large-scale (massive) multiple-input multiple-output (L-MIMO) system is considered. To support multiple users with multiuser (MU) precoding, the channel state information (CSI) needs to be known at a transmitter. To do this, the CSI needs to be fed back from a receiver, yet the feedback requires a significant overhead of the networks. To(More)
In the GSM-R (GSM for Railways) mobility management technology, handover is the crucial factor to maintain high reliability and validity of mobile communication. However in high-speed movement scenario where shorter handover latency is required, the traditional handover scheme which has been adopted in the GSM network could no longer guarantee high quality(More)
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