Cognitive Radio - 802.22
Code for this is available at http://tetcos.com/File_Exchange/PUE_Attack_Project.zip and can be used from NetSim v9 onwards
Tue, 19 Apr, 2016 at 4:06 PM
The switching to another channel by the secondary user (CR CPE) occurs when an incumbent comes on. However, the switching will not be done to an adjacent ch...
Tue, 3 May, 2016 at 12:30 PM
NetSim Cognitive Radio library detects spectrum usage based on whether the primary user (incumbent) is inside / outside the keep out distance from the s...
Tue, 16 May, 2017 at 3:36 PM
The Secondary Users (CR CPE) send UCS_Notification(Urgent Coexistence Situation) Packets to the Base Station when they detect the presence of Primary Users ...
Fri, 31 Mar, 2017 at 11:29 AM
In 802.22 simulations, the secondary stops transmissions when the primary comes on. Since the transmissions are stopped the TCP RTO Expires and window drops...
Wed, 17 May, 2017 at 8:29 AM
Given below are some important points users should keep in mind when running 802.22 cognitive radio simulations
CR BS allocates max one symbol per CPE. I...
Tue, 25 Jul, 2017 at 12:30 PM
Data rate in 802.22 depends on the following parameters
· No. of bits per symbol
· Coding rate
· Cyclic prefix
· Symbol duration
Data rate i...
Wed, 1 Nov, 2017 at 12:22 PM
Let us say there is some delay in sensing the primary. This would mean that there is a delay in sending the UCS. To incorporate this In the file SpectrumMa...
Mon, 26 Mar, 2018 at 4:56 PM
Spectrum sensing is one of the most important components of cognitive radio (CR) technology. The delays in sensing idle channels for SU data will have a dir...
Mon, 2 Apr, 2018 at 4:26 PM
If you are going to set your own value for say transmit power at the start of the simulation itself, then you can update the values in the init function its...
Mon, 2 Apr, 2018 at 4:34 PM