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- W2403669838 abstract "Spectrum leasing issue is investigated by an opportunistic cooperative approach. The scenario includes a multi-antenna primary user (working as a Base Station) and a number of singleantenna primary and cognitive radio users (CR users). The core aim of this paper is to maximize the data rate in the downlink, from base station (PU BS) to the desired primary user (PU RX), taking advantage of the cooperation of opportunistically selected CR users. Cooperating CR users will enjoy the benefits of transmitting to their intended CR receivers in a portion of time, allocated by PU BS. The main contribution of this work is proposing the opportunistic cooperative approach. Meanwhile the interference imposed on other PUs, due to cooperation of selected CR users, is removed. Moreover, as the opportunistically selected CR users form a virtual antenna array, it becomes feasible to utilize zero-forcing beamforming to remove the interference on other PUs." @default.
- W2403669838 created "2016-06-24" @default.
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- W2403669838 date "2015-01-01" @default.
- W2403669838 modified "2023-09-23" @default.
- W2403669838 title "An Opportunistic Cooperative Approach for Dynamic Spectrum Leasing in Cognitive Radio Networks." @default.
- W2403669838 hasPublicationYear "2015" @default.
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