A Novel Correlation Sum Method for Cognitive Radio Spectrum Sensing

Cognitive radio is a promising concept for coping with the spectrum scarcity in future generation wireless communication networks. This idea, including Software-Defined Radio (SDR) as the enabling technology, was suggested by Mitola to realize flexible and efficient usage of spectrum. An important component of cognitive radio is spectrum sensing to detect the presence or absence of a primary (licensed) user in the spectrum for a given location. Some existing spectrum sensing techniques found in the cognitive radio literature are matched filtering, waveform-based sensing, cyclostationary-based sensing energy detection and radio identification.