Sentence examples for several secondary users from inspiring English sources
It combines sensing information of several secondary users to make more accurate detection.
To reduce these margins, we also propose cooperative maximum allowable transmit power setting method utilizing also received signal strength values from several secondary users.
In this work, an optimal power allocation algorithm is proposed for mobile cooperative beamforming networks, where several secondary users (SUs) collaboratively act as relay nodes to assist the transmission of a primary user (PU) in reward of transmitting their own information.
In this paper, we study the centralized spectrum access and power management for several opportunistic users, secondary users (SUs), without hurting the primary users (PUs).
Places represent several states of primary and secondary users during a spectrum sharing agreement/disagreement.
Since CSS is vulnerable to the attacks initiated by malicious secondary users (SUs), several secure CSS schemes based on Dempster-Shafer theory have been proposed.
In order to improve spectrum sensing, several authors have recently proposed collaboration among secondary users [18, 19].
Unlike several studies, our model introduces the priority among secondary users and addresses the issue of spectrum handoff under prioritized SU calls.
Figure 2 Various functioning modules for primary and secondary users.
Although cognitive beamforming has been well developed for several years, existing researches mainly focus on beamformer design at cognitive base stations, either for secondary users' data transmission with restricted transmit power [9,10] or for primary-secondary cooperation with careful designed cooperation protocols [11,12].
