Research on the Optimal Spectrum Sensing of DVB-T2 and Wi-Fi 6 for Cognitive Radio System

In this study, we propose the spectrum sensing technology of DVB-T2 and Wi-Fi 6 for cognitive radio systems. The implemented detectors use unique preamble characteristics signals. performance is optimized in a channel where signals are mixed along with signal-to-noise ratio (SNR) over range −10 dB to 10 dB. detector uses an autocorrelation that applies distinctive each signal preamble. Thresholds searched output intrinsic detectors. probabilities false alarms missed detections at threshold extracted derive optimal determine presence signal. After optimization, shows detection probability less than 0.25 % −6 SNR 0.21 −4 without alarm.