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A Survey on Simulation Tools and Testbeds for Cognitive Radio Networks Study
Efficient utility of radio spectrum has been a hot topic as the wireless
communication spectrum is a precious resource. The past decade has witnessed
intensive research in spectrum sharing techniques. Most of the techniques are
based on cognitive radio networks (CRNs) because cognitive capabilities are
essential for optimizing spectrum efficiency and guaranteeing safe coexistence
in the presence of the spectrum uncertainty. However, due to the high
complexity of the problem, most research has been limited to theoretical
analysis. It is non-trivial to build a simulator that is capable of carrying
out a comprehensive experimental study. In this paper, a survey is conducted to
provide a big picture of the available simulators in CRNs research. By
illustrating their major functionalities, the insight enables researchers to
select tools that match their needs. In addition, with a better understanding
of the advantages and constraints, this survey aims at providing a guideline
for simulator designers who have been trying to meet the requirements from the
CRN research community