SYSTEMS, NETHODS, AND APPARATUSES FOR A LONG DELAY GENERATION TECHNIQUE FOR SPECTRUM-SENSING OF COGNITIVE RADIOS

摘要

One embodiment of the present invention can provide a Chang generator for spectral detection of a cognitive radio system. The Chang generator analog-to-analog converter (DAC) - digital converter (ADC), a memory element, and digital. The memory element may be a shift register banks or a random access memory cells. The Chang generator sikimyeo digitizes the received signal, delays the received signal in the digital domain, and provides a selectable delay by reconfiguring the delay signal to analog. Analog delay signal determines that the signal format which means are correlated or compared with the original input signals using analog autocorrelation techniques identified or detected. ; Spectrum detection, analog auto-correlation, the delay