International Journal of Information and Communication Technology Research
مجله بین المللی ارتباطات و فناوری اطلاعات
International Journal of Information and Communication Technology Research
Engineering & Technology
http://ijict.itrc.ac.ir
1
admin
2251-6107
2783-4425
doi
1652
25391
en
jalali
1392
12
1
gregorian
2014
3
1
6
1
online
1
fulltext
fa
An Opportunistic Cooperative Approach for Dynamic Spectrum Leasing in Cognitive Radio Networks
فناوری اطلاعات
Information Technology
پژوهشي
Research
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.
Oppurtunistic Spectrum leasing, Cognitive Radio Networks, Cooperative Communication, Stackelberg Game
1
9
http://ijict.itrc.ac.ir/browse.php?a_code=A-10-27-106&slc_lang=fa&sid=1
Mehdi
Ghamari Adian
1003194753284600360
1003194753284600360
Yes
Hassan
Aghaeinia
1003194753284600361
1003194753284600361
No