Dynamic Spectrum Allocation For Cognitive Cellular Network
Rahul Nawkhare Sana-ur-Rahman Mayur Lambe · Zenodo (CERN European Organization for Nuclear Research) · 2018
In today's world of mobile communication is lagging because of limited spectrum allocation or improper allocation. So we have to use technique called as Dynamic spectrumallocation. we see that in urban area like metro cities the use of spectrum is at very high but in rural area or less populated area the use of the spectrum is less in this we are using the spectrum for secondary user when my primary user is not using the spectrum as soon as primary data is resent for transmitting immediately the secondary data is not sent this is done by placing nodes in ns 2 software and coding is done in such way that after transmission of every 20 data packets the secondary user will send one packet this is done by fedora in ns-2 softwareNumber of wireless devices in ISM bands increasing Wi-Fi, Bluetooth, Interference performance loss Other portions of spectrum are underutilized Example: TV-BandsFCC approved in 2004 to allow unlicensed users to use unoccupied TV bands Mainly looking at frequencies from 512 to 698 MHz Requiressmart radiotechnology Spectrum aware, not interfere with TV transmissions