IV. PRACTICAL REALIZATION
The proof-of-concept implementation of our proposed solution
for whitespace networks leverages the open-source software
defined radio platform Iris (formerly Implementing Radio
In Software) developed at Trinity College Dublin [14]. Iris
is a software architecture that has been implemented in C++
for General Purpose Processors (GPP) to provide a framework
for building reconfigurable software radios. These radios are
constructed from a combination of a number of virtualized
functional blocks for signal operations, in Iris nomenclature