This paper considers joint optimization of cooperative beamforming and relay assignment
for multi-user multi-relay wireless networks to maximize the minimum of the received signal …

We consider a system with a single base station communicating with multiple users over
orthogonal channels while being assisted by multiple relays. Several recent works have …

In this paper, energy-efficient secure communications via untrusted two-way relaying are
investigated considering physical layer security to prevent the relays from intercepting the …

The next generation wireless systems are supposed to handle high data rate as well as
large coverage area. It should consume less power and utilize bandwidth efficiently. At the …

This paper considers a multiuser single-relay wireless network, where the relay gets paid for
helping users forward signals, and the users pay to receive the relay service. We study the …

A joint power allocation (PA) scheme for a class of MIMO relay systems is presented in this
paper. Based on the maximization of the capacity or minimization of the mean-square error …

Cooperative communication exploits spatial diversity via relay node antennas to increase
data rates in wireless networks. Relay node selection, therefore, plays a critical role in …

The energy efficiency (EE) of a multi-user multi-relay system with the maximum diversity
network coding (MDNC) is studied. We explicitly find the connection among the outage …

In this paper, we consider a multi-user single-relay wireless network, where the relay
facilitates transmissions of the users' signals to the destination. We study the relay power …

In the present work, we investigate the power allocation problem in distributed sensor
networks that are used for passive radar applications. The signal emitted by a target is …