Samsung Electro-Mechanics Co., Ltd.

Georgia Tech Research Corporation

Seongsoo Lee

Chang-Ho Lee

Joy Laskar

Taejoong Song

Haksun Kim

Kyutae Lim

Kihong Kim

Jongmin Park

Jeongsuk Lee

Youngsik Hur

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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Kyunggi, South Korea

Seongsoo Lee