Multi-user diversity in a spectrum sharing system
IEEE Transactions on Wireless Communications
On ergodic sum capacity of fading cognitive multiple-access and broadcast channels
IEEE Transactions on Information Theory
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
On the capacity of MIMO broadcast channels with partial side information
IEEE Transactions on Information Theory
Performance analysis of uplink cognitive cellular networks with opportunistic scheduling
IEEE Communications Letters
Energy-efficient and low-complexity schemes for uplink cognitive cellular networks
IEEE Communications Letters
Impact of Quality of Service Constraints on the Performance of Spectrum Sharing Cognitive Users
Wireless Personal Communications: An International Journal
Performance of Cognitive Radios in Dynamic Fading Channels Under Primary Outage Constraint
Wireless Personal Communications: An International Journal
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A new form of multiuser diversity, named multiuser interference diversity, is investigated for opportunistic communications in cognitive radio (CR) networks by exploiting the mutual interference between the CR and the existing primary radio (PR) links. The multiuser diversity gain and ergodic throughput are analyzed for different types of CR networks and compared against those in the conventional networks without the PR link.