This paper presents a new spatial spectrum-sharing strategy for massive multiple-input
multiple-output (MIMO) cognitive radio (CR) systems, where two CR base stations (CBS) are …

In this paper, we introduce a new spatial spectrum-sharing strategy for massive multiple-
input multiple-output (MIMO) cognitive radio (CR) systems. Different from the conventional …

Large-scale antenna technology is a key technology for the fifth-generation mobile
communication (5G) system to improve capacity and spectrum utilization; meanwhile …

The asymptotic sum rate performance of multi-cell/multi-user cognitive massive multiple-
input multiple-output (MIMO) systems with underlay spectrum sharing is investigated …

In this paper, we analyze the feasibility of serving K secondary users (SUs) on the downlink
using a secondary base station (SBS), equipped with a large antenna array, in an underlay …

Massive MIMO systems were utilized in overlay Cognitive Radio (CR) networks to allow
simultaneous primary and secondary data transmission while enhancing the spectral …

This paper discusses transmission performance and power allocation strategies in an
underlay cognitive radio (CR) network that contains relay and massive multi-input multi …

In this paper, the performance of an underlay multiple-input multiple-output (MIMO) cognitive
radio system is analytically studied. In particular, the secondary transmitter operates in a …

In this paper, we investigate the power allocation problem in massive multiple-input-multiple-
output cognitive radio networks. We propose an orthogonal pilot sharing scheme at pilot …

A low-density spatial downlink reference signal (LDS-RS) design is proposed for frequency-
division duplex (FDD) massive full-dimensional multiple-input multiple-output (FD-MIMO) …