Focusing on two-antenna infrastructure relays employed for coverage extension, we
develop hybrid techniques that switch opportunistically between full-duplex and half-duplex …

Properly designed precoders can significantly improve the spectral efficiency of multiple-
input multiple-output (MIMO) relay systems. In this paper, we investigate joint source and …

This paper studies the achievable rate region for an amplify-and-forward (AF)-based two-
way relay network with collaborative beamforming. With different assumptions of channel …

It is becoming more important that next-generation wireless networks wisely integrate
multiple services at the physical layer to increase spectral efficiency. In this article, physical …

In this paper, we consider a transmit beamforming design for multiple-input–multiple-output
(MIMO) decode-and-forward (DF) half-duplex two-hop relay channels with a direct source …

This paper studies a cooperative cognitive radio network where two primary users (PUs)
exchange information with the help of a secondary user (SU) that is equipped with multiple …

A multiple-input multiple-output two-way relay channel consisting of two communication
nodes and a full-duplex relay node in which no direct link exists between the two …

In this work the transmit covariance matrix optimization problem for the discrete memoryless
MIMO Gaussian bidirectional broadcast channel is studied. A half-duplex relay node …

We consider regenerative multi-group multi-way (MGMW) relaying. A half-duplex
regenerative multi-antenna relay station (RS) assists multiple communication groups. In …

Some of the existing relay schemes for cooperative networks based on one-way relaying
protocol are not applicable to the case of two-way relaying protocol. In this letter, a …