Secure transmission techniques have been receiving growing attention in recent years, as a
viable, powerful alternative to blocking eavesdropping attempts in an open wireless …

We consider a network of cognitive users (also referred to as secondary users (SUs))
coexisting and sharing the spectrum with primary users (PUs) in an underlay cognitive radio …

SINR duality is shown in a multi-input single-output (MISO) downlink (DL) interference
channel (IFC) and its uplink (UL) single-input multi-output (SIMO) dual with linear transmit …

Cognitive radio networks (CRNs) have the ability to utilise the radio spectrum efficiently by
allowing secondary users (SUs) to communicate in the licensed frequency bands. In this …

A robust beamformer design is proposed for a spectrum sharing CR network consisting of
multiple secondary users (SUs) in the presence of multiple primary users (PUs). The …

We propose a robust signal to interference and noise ratio (SINR) balancing beamforming
technique for a multiple input and multiple output (MIMO) based cognitive radio (CR) …

We design a linear transceiver in the downlink for a spectrum sharing multiuser multiple-
input-multiple-output (MIMO) networks. This linear transceiver ensures that the required …