Spectrum management and power allocation in MIMO cognitive networks

DN Nguyen, M Krunz - 2012 Proceedings IEEE INFOCOM, 2012 - ieeexplore.ieee.org
We consider the problem of maximizing the throughput of a multi-input multi-output (MIMO)
cognitive radio (CR) network. CR users are assumed to share the available spectrum …

Power minimization in MIMO cognitive networks using beamforming games

DN Nguyen, M Krunz - IEEE Journal on Selected Areas in …, 2013 - ieeexplore.ieee.org
We consider a multi-channel multi-user cognitive radio MIMO network in which each node
controls its antenna radiation directions and allocates power for each data stream by …

Price-based joint beamforming and spectrum management in multi-antenna cognitive radio networks

DN Nguyen, M Krunz - IEEE Journal on Selected Areas in …, 2012 - ieeexplore.ieee.org
We consider the problem of maximizing the throughput of a multi-antenna cognitive radio
(CR) network. With spatial multiplexing over each frequency band, a multi-antenna CR node …

Optimal spectrum sharing in MIMO cognitive radio networks via semidefinite programming

YJA Zhang, AMC So - IEEE Journal on Selected Areas in …, 2011 - ieeexplore.ieee.org
In cognitive radio (CR) networks with multiple-input multiple-output (MIMO) links, secondary
users (SUs) can exploit" spectrum holes" in the space domain to access the spectrum …

On the throughput of MIMO-empowered multihop cognitive radio networks

C Gao, Y Shi, YT Hou… - IEEE Transactions on …, 2011 - ieeexplore.ieee.org
Cognitive radio (CR) and multiple-input multiple-output (MIMO) are two independent
physical layer technologies that have made significant impact on wireless networking. CR …

Power loading for multicarrier cognitive radio with MIMO antennas

U Phuyal, A Punchihewa, VK Bhargava… - 2009 IEEE Wireless …, 2009 - ieeexplore.ieee.org
We propose a power loading scheme for multi-carrier cognitive radio (CR) network
employing multiple-input multiple-output (MIMO) antennas. We allocate power to different …

Energy efficient transmissions in MIMO cognitive radio networks

L Fu, YJA Zhang, J Huang - IEEE Journal on Selected Areas in …, 2013 - ieeexplore.ieee.org
In this paper, we study energy-efficient transmissions for multiple-input multiple-output
(MIMO) cognitive radio (CR) networks in which the secondary unlicensed users coexist with …

Joint beamforming and power control in MIMO cognitive radio networks

N Noori, SM Razavizadeh, A Attar - IEICE Electronics Express, 2010 - jstage.jst.go.jp
In this paper, the problem of joint beamforming and power control is studied in the uplink of
multiple-input multiple-output (MIMO) cognitive radio networks (CRNs). The objective is …

Sub-optimal power allocation in MIMO-OFDM based cognitive radio networks

H Shahrokh, K Mohamed-pour - 2010 6th International …, 2010 - ieeexplore.ieee.org
Multi-carrier systems are one of the best candidates for applying in Cognitive Radio (CR)
networks because of the spectrum shaping and high adaptive capabilities. Since secondary …

Binary power allocation for cognitive radio networks with centralized and distributed user selection strategies

B Zayen, M Haddad, A Hayar, GE Øien - Physical Communication, 2008 - Elsevier
Motivated by the desire for efficient spectral utilization, we present a novel algorithm based
on binary power allocation for sum rate maximization in Cognitive Radio Networks (CRN). At …