Traditional spectrum allocation policies may result in temporarily unused radio spectrum.
Cognitive radio (CR) has emerged as a promising technology to exploit the radio spectrum …

We consider a downlink multiuser MISO system with bounded errors in the channel state
information at the transmitter (CSIT). We first look at the robust design problem of achieving …

We consider a full duplex (FD) multiple-input multiple-output (MIMO) underlay cognitive
radio cellular network, in which an FD secondary base-station (BS) serves multiple half …

In this paper, we study a problem of relay selection in a two-hop relaying network where the
destination is equipped with Simultaneous Wireless Information and Power Transmission …

In this paper, we study a multiple-antenna two-way relaying (TWR) cognitive radio (CR)
system. A space alignment (SA) technique is adopted by the secondary users (SUs) to avoid …

In this paper, the power control scheme is proposed in the two-tier femtocell network, where
the wireless resources are shared with the macrocell and femtocell. Since the …

In this research, we are analyzing the simultaneous wireless information and power transfer
(SWIPT) system with one relay node, assuming the relay follows the amplify and forward …

In this paper, a general cognitive radio system consisting of a set of users with different level
of spectrum access including two primary transceivers and several types of secondary users …

Signal processing techniques for multiple-antenna transmission can exploit the spatial
dimension of the wireless channel to serve multiple users simultaneously, achieving high …

In this paper, we investigate the robust relay beamforming design for a multi-input multi-
output (MIMO) two-way relay networks (TWRN) by considering imperfect and reciprocal …