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In this paper, the uplink semi-persistent scheduling policy problem of minimizing network latency is considered for a training-based large-scale antenna system employing two simple linear receivers, a maximum ratio combiner and a zero-forcing receiver, while satisfying each user’s reliability and latency constraints under an energy constraint. The network latency is defined as the air-time requested...
In this article, we present a real-time 3D hybrid beamforming approach for 5G wireless networks. One of the key concepts in 5G cellular systems is the small cell network, which settles the high mobile traffic demand and provides uniform user-experienced data rates. The overall capacity of the small cell network can be enhanced with the enabling technology of 3D hybrid beamforming. This study validates...
In this paper, massive multiple-input multiple-output (massive MIMO) and full-duplex communications (FDC) are considered together for high efficiency next generation wireless LAN (WLAN) systems such as IEEE 802.11ax or beyond. The proposed scheme allocates different carrier sensing thresholds by applying the joint spatial division and reuse (JSDR) scheme and is able to enhance the efficiency of multi-user...
In the 5th generation cellular system, a large-scale cloud radio access network is one of the most promising structures for providing high quality-of-service to end users. This extended abstract presents the impact of interference on such a system. Based on stochastic geometry and probabilistic order notation, the scaling exponents of the guaranteed signal-to-interference-plus-noise ratio and the...
We consider MIMO-HARQ protocols with/without relay under block fading channels with the assumption that the source, destination, and relay are half-duplex nodes with two antennas. The achievable rate of 2×2 MIMO-HARQ protocols are obtained when the number of retransmissions is unlimited and the optimum ratio between the two streams of two antennas is obtained. The MIMO-HARQ protocol without relay...
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