This paper investigates the uplink performance of a general cell-free massive multiple-input
multiple-output (CF-mMIMO) system, in which all access points (APs) and user equipments …

Integrating reconfigurable intelligent surface (RIS) into cell-free massive multiple-input
multiple-output (MIMO) is a promising approach to enhance the coverage quality, spectral …

An introduction of intelligent interconnectivity for people and things has posed higher
demands and more challenges for sixth-generation (6G) networks, such as high spectral …

We consider unmanned aerial vehicle (UAV)-enabled wireless systems where downlink
communications between a multi-antenna UAV and multiple users are assisted by a hybrid …

An innovative method to raise wireless communication systems' efficiency is to use
Reconfigurable Intelligent Surface (RIS). Unfortunately, determining the quantity and …

Cell-free massive multiple-input multiple-output (MIMO) networks, where a massive number
of geographically distributed access points cooperate to jointly serve the users, have been …

Cell-free (CF) massive multiple-input multiple-output (MIMO) and reconfigurable intelligent
surface (RIS) are two disruptive technologies for enabling the sixth-generation network. In …

Reconfigurable intelligent surfaces (RISs) have become a candidate for future 6G networks.
The concept of active RISs has been recently proposed to overcome the multiplicative fading …

Although reconfigurable intelligent surfaces (RISs) can improve the performance of wireless
networks by smartly reconfiguring the radio environment, existing passive RISs face two key …

Distributed Antenna Systems (DASs) employ multiple antenna arrays in remote radio units to
achieve highly directional transmission and provide great coverage performance for future …