[1][2] The concept of DSM also draws principles from the fields of cross-layer optimization, artificial intelligence, machine learning etc.
It has been recently made possible by the availability of software radio due to development of fast enough processors both at servers and at terminals.
[3][4] The technique involves multiple methods: An important application of dynamic spectrum access is in wireless networks.
Most wireless communication services are provided under a fixed spectrum allocation predefined by regulators and assigned by auctions to the operators.
Despite the increasing improvements in the spectral efficiency of wireless technologies, the demand for bandwidth exceeds the availability of spectrum for new communication services and networks.