The research on the sixth-generation (6G) wireless communications for the development of
future mobile communication networks has been officially launched around the world. 6G …

Wireless networks are a key component of the telecommunications infrastructure in our
society, and wireless services become increasingly important as the applications of wireless …

Many performance gains achieved by massive multiple-input and multiple-output depend on
the accuracy of the downlink channel state information (CSI) at the transmitter (base station) …

Wireless local area networks (WLANs) empowered by IEEE 802.11 (Wi-Fi) hold a dominant
position in providing Internet access thanks to their freedom of deployment and configuration …

Massive multiple-input multiple-output can obtain more performance gain by exploiting the
downlink channel state information (CSI) at the base station (BS). Therefore, studying CSI …

In frequency-division duplexing systems, the downlink channel state information (CSI)
acquisition scheme leads to high training and feedback overhead. In this work, we propose …

MU-MIMO and OFDMA are two key techniques in IEEE 802.11 ax standard. Although these
two techniques have been intensively studied in cellular networks, their joint optimization in …

Multi-user MIMO is a key component of modern wireless networks. As such, investigating the
related security weaknesses is a compelling necessity. A major issue unveiled by existing …

Modern IEEE 802.11 (Wi-Fi) networks extensively rely on multiple-input multiple-output
(MIMO) to significantly improve throughput. To correctly beamform MIMO transmissions, the …

LoRa has emerged as a key wireless communication technology for a gateway to provide
geographically-distributed IoT devices with low-rate, long-range connections. In this paper …