Performance of spectrum sensing in cognitive radio for resources allocation

Cognitive radio (CR) is the latest type of wireless technology and provides more flexibility in terms of spectrum utilization. in CR, secondary user uses primary user’s spectrum during primary user’s absence without interrupting the primary user’s transmission. However, the secondary user’s transmission is interrupted as primary user reconnects to their spectrum. The secondary user needs to identify a new available spectrum for retransmission. This paper presents the development of cognitive radio network using Android based smart phone for the data transmission. Both Bluetooth and WiFi spectrum detection are focused here. The used sensing method is energy based sensing method. The CR is developed using Java based Android Eclipse. The developed CR network is verified using Android based smart phone. Result shows that the proposed CR network is able to sense the spectrum with accuracy of approximately of 81%. The developed CR network is able to help secondary users to sense and use spectrum (licensed) for data transmission.