Category: MATLAB

Resource-Allocation Strategy for Multiuser Cognitive Radio Systems Location-Aware Spectrum Access

Resource-Allocation Strategy for Multiuser Cognitive Radio Systems: Location-Aware Spectrum Access Abstract: This paper considers a new power strategy and channel-allocation optimization for secondary users (SUs) in an orthogonal frequency-division multiplexing (OFDM)-based cognitive radio (CR) network where the coverage area of the secondary network is divided into an overlay region and a hybrid region. SUs in […]


Bidirectional AF Relaying With Underlay Spectrum Sharing in Cognitive Radio Networks

Bidirectional AF Relaying With Underlay Spectrum Sharing in Cognitive Radio Networks  Abstract: This paper investigates the impact of primary transmissions on the performance of a dual-hop bidirectional cognitive radio system. The secondary users (SUs) communicate with each other in an underlay mode with the assistance of amplify-and-forward (AF) relays in the presence of primary users […]