Performance Enhancement of Cyclostationarity Detector by Utilizing Multiple Cyclic Frequencies of OFDM Signals
Source: Tokyo Institute of Technology
Spectrum sensing is a key technical challenge for the Cognitive Radio (CR) technology which allows it to access the spectrum of the licensed systems without causing interference to them. It is well known that cyclostationarity detectors have a great advantage of the robustness of noise uncertainty which significantly degrades the performance and makes its implementation difficult in energy detectors. This paper pays attention to the fact that cyclostationarity detector can achieve diversity gain by manipulating multiple Cyclic Autocorrelation Functions (CAFs).