Another platform that has captured our attention is ASGARD [1]. ASGARD is effectively a software tool utilised for the implementation of Cognitive Radio communication systems over Software Defined Radio equipment.The main idea is to design a Software Platform that provides the necessary degree of flexibility for the implementation of reconfigurable, multi-layered communication systems. The platform architecture is component based and supports customized thread of execution architecture.In order to ensure testbed evolution and expansion, compatibility with COTS hardware, modern PCs and latest Linux OS releases has been taken into account when developing this platform.

[1] ASGARD:http://asgard.lab.es.aau.dk/joomla/,