شماره ركورد كنفرانس :
3926
عنوان مقاله :
Cooperative Beamforming in Cognitive Radio Network with Network-Coded Bidirectional Filter-and-Forward Relaying
پديدآورندگان :
Shamailzadeh Mahdi m.shamailzade@ee.kntu.ac.ir Department of Electrical Engineering K.N. Toosi University of Technology Tehran, Iran , Bastami .Ali H bastami@eetd.kntu.ac.ir Department of Electrical Engineering K.N. Toosi University of Technology Tehran, Iran
كليدواژه :
Bidirectional relaying , cognitive radio , cooperative beamforming , filter , and , forward , network coding , sum rate.
عنوان كنفرانس :
بيست و چهارمين كنفرانس مهندسي برق ايران
چكيده فارسي :
In this paper, for an underlay cognitive radio network with network-coded bidirectional filter-and-forward (FF) relaying, two cooperative beamforming schemes are proposed. The first scheme maximizes the worst signal-to-interference-plusISI-and-noise ratio (SI2NR) of the secondary users such that the interference level at the primary receiver does not exceed an allowable threshold. The second scheme maximizes the sum rate of the secondary users under a total power constraint for the relay nodes as well as an interference temperature constraint for the primary network. The simulation results demonstrate that the proposed schemes have significant performance improvement compared to the amplify-and-forward (AF)-based beamforming schemes.
