Samsung Electro-Mechanics Co., Ltd.

Georgia Tech Research Corporation

Jongmin Park

Chang-Ho Lee

Joy Laskar

Haksun Kim

Kyutae Lim

Taejoong Song

Kihong Kim

Jeongsuk Lee

Seongsoo Lee

Youngsik Hur

Systems and methods may be provided for threshold determinations for spectrum sensing. The systems and methods may include receiving a false alarm rate, where the false alarm rate is associated with false occupancy identifications of a spectrum segment, determining a noise floor as a function of a noise figure and characteristics of a multi-resolution spectrum sensing (MRSS) window, and calculating a sensing threshold based at least in part upon the false alarm rate and the noise floor. The systems and methods may also include determining whether a portion of an RF spectrum is occupied based at least in part on the calculated sensing threshold.

Systems and methods for determining sensing thresholds of a multi-resolution spectrum sensing (MRSS) technique for cognitive radio (CR) systems

Embodiments of the invention may provide for a long delay generator for the spectrum sensing of cognitive radio systems. The long delay generator may include an Analog-to-Digital Converter (ADC), memory element, and Digital-to-Analog Converter (DAC). The memory element may utilize shift register bank or Random-Access Memory (RAM) cells. The long delay generator may provide for a selectable delay by digitizing the received signal, delaying the received signal in the digital domain, and reconstructing the delayed signal as an analog. The analog delayed signal may then be compared or otherwise correlated with the original input signal using an analog auto-correlation technique to determine whether a meaningful signal type has been identified or otherwise detected.

Systems, methods, and apparatuses for a long delay generation technique for spectrum-sensing of cognitive radios

Embodiments of the invention may provide for digital wavelet generators utilized in providing flexible spectrum-sensing resolutions for a Multi-Resolution Spectrum Sensing (MRSS) technique. Embodiments of the invention may provide for either multi-point or multi-rate digital wavelet generators. These digital wavelet generators may utilizing the same hardware resource optimally, and the various wavelet bases may be generated by changing the memory addressing schemes or clock speeds.

Systems, methods, and apparatuses for digital wavelet generators for Multi-Resolution Spectrum Sensing of Cognitive Radio applications

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Atlanta, GA, United States of America

Jongmin Park