Unmanned aerial vehicles (UAVs) have gained considerable interests in numerous civil
applications. To push forward its potentials, cellular-connected UAVs have been introduced …

In this letter, we consider a non-orthogonal multiple access (NOMA) network with a half-
duplex (HD) decode-and-forward (DF) relay to improve physical layer security (PLS) of two …

To support massive connectivity and boost spectral efficiency for Internet of Things (IoT), a
downlink scheme combining virtual multiple-input-multiple-output (MIMO) and …

Driven by the ever-increasing requirements of ultra-high spectral efficiency, ultra-low
latency, and massive connectivity, the forefront of wireless research calls for the design of …

Non-orthogonal multiple access (NOMA) technique is important for achieving a high data
rate in next-generation wireless communications. A key challenge to fully utilizing the …

We analyze the secrecy performance of a wireless system with limited feedback, where the
channel state information (CSI) is imperfectly known at a multi-antenna source. In order to …

In this paper, we propose a novel successive sub-array activation (SSAA) diversity scheme
for a massive multiple-input multiple-output (MIMO) system in combination with non …

In this paper, role switching and power allocation schemes are proposed to tackle user
mobility in non-orthogonal multiple access (NOMA) systems. A downlink transmission …

We investigate joint power allocation and decoding order selection (PA-DOS) aimed at
enhancing the outage performance of non-orthogonal multiple access (NOMA) systems. By …

In downlink, a base station (BS) with multiple transmit antennas applies zeroforcing
beamforming to transmit to single-antenna mobile users in a cell. We propose the schemes …