Ugo Silva Dias

TL;DR: The results show that if the residual error propagation levels are high, the employment of orthogonal multiple access (OMA) is always preferable than NOMA, and it is shown that the proposed power allocation outperforms conventional massive MIMO-NOMA setups operating with fixed power allocation strategies in terms of outage probability.

TL;DR: This article demonstrates the main roles of IRSs in MIMO-NOMA systems and identifies key challenges and performs a comprehensive discussion of the main performance gains that can be achieved in IRS-assisted massive MIMo-NomA (IRS- NOMA) networks.

TL;DR: This paper derives novel and accurate expressions for outage probability and ergodic capacity of the proposed HSTRN, and conducts the performance analysis by taking both uncorrelated and correlated Shadowed-Rician fading channels into account and shows that the antenna correlation at the satellite does not affect the overall system diversity order.

TL;DR: It is shown that the diversity gain is independent from the number of transmit antennas when the available CSI becomes outdated, and simplified asymptotic closed-form expressions for the outage probability have been derived to examine the achievable diversity and coding gains.

TL;DR: The derived analytical formulas present an efficient tool to depict the impact of some system and channel parameters on the secrecy performance, namely, the number of relay antennas,The number of eavesdropping nodes, relay gain, fading severity of RF links, and water turbulence severity of the UOWC link.