Title :
Throughput optimization for Cognitive Radio while bulwarking Primary User
Author :
Baig, Zunnorain Amer Ali ; Malik, Aqdas Naveed ; Qureshi, Ijaz Mansoor
Author_Institution :
FET, Isra Univ., Islamabad, Pakistan
Abstract :
Electromagnetic spectrum, a natural limited resource, with the boom in applications of wireless communications, that limited resource is becoming congested more and more and the only solution for efficient spectrum utilization is Cognitive Radios, moreover spectrum sensing is the most irrefutably functionality in CRs and with spectrum sensing, throughput for secondary user´s transmission plays an important role. In this paper after performing spectrum sensing using energy detection scheme, we have achieved the optimized throughput for Secondary User by ensuring the protection of Primary User´s rights. For a total time in a frame, least time for sensing is desired and the residual time in that frame is used for transmission. Two parameters related to sensing are fallacious alarm probability and detection probability pertaining to secondary and primary users correspondingly, greater the probability of detection, more the licensed user´s rights are protected, smaller the fallacious alarm probability, greater chance of using the underutilized band, applying the most famous technique known as energy detection scheme. In this paper we studied the problem of conniving sensing time in order to achieve maximum and optimal transmission time for secondary user keeping the restraint that licensed user is adequately bulwarked. Maximum achievable throughput was achieved with least sensing time, not achieved in previous work.
Keywords :
cognitive radio; optimisation; probability; radio spectrum management; signal detection; cognitive radio; detection probability; electromagnetic spectrum; energy detection scheme; fallacious alarm probability; licensed user rights protection; optimal transmission time; primary user bulwarking; spectrum sensing; spectrum utilization efficiency; throughput optimization; underutilized band; wireless communication; Atmosphere; Equations; Mathematical model; Monte Carlo methods; Reliability; Sensors;
Conference_Titel :
Emerging Technologies (ICET), 2014 International Conference on
Conference_Location :
Islamabad
Print_ISBN :
978-1-4799-6088-0
DOI :
10.1109/ICET.2014.7021025