This paper investigates the fundamental rate performances in highly promising cellular-enabled unmanned aerial vehicle (UAV) swarm networks, which can provide ubiquitous wireless connectivity for supporting various Internet of things (IoT) applications. We first formulations sum maximization and max-min rate, are two nonlinear optimization problems subject to constraints UAV transmit power ante...

We characterize the sum rate of a class of multiterminal Gaussian source coding problems with quadratic distortion constraints. The key component of the solution is the identification of a multiple antenna broadcast channel that serves as a test channel.

This paper investigates the sum rate (SR) maximization problem for downlink cooperative non-orthogonal multiple access (C-NOMA) systems with hardware impairments (HIs). The source node communicates users via a half-duplex amplified-and-forward (HD-AF) relay HIs. First, we derive SR expression of under Then, is formulated maximum power source, relay, and minimum constraint each user. As original...

This paper aims to investigate the benefit of using intelligent reflecting surface (IRS) in multi-user multiple-input single-output (MU-MISO) systems, presence eavesdroppers. We maximize weighted sum secrecy rate by jointly designing secure beamforming (BF), artificial noise (AN), as well phase shift IRS. An alternating optimization (AO) method is proposed deal with formulated non convex proble...