Abstract:
The present invention relates to an apparatus and a method for compressing a signal in dynamic compressive sensing, wherein the apparatus comprises a signal inputting part for outputting an input signal, and, concurrently, generating and outputting a linear measurement reference signal based on the input signal; a linear deforming part for receiving the linear measurement reference signal and variably generating a linear measurement matrix value according to the linear measurement reference signal; a signal compressing part for outputting a compressed signal for the input signal based on the generated linear measurement matrix value; and a signal processing part for restoring the compressed signal and performing spectrum sensing on the input signal. The present invention uses sparsity information of the input signal, thereby enhancing signal compression efficiency in compressive sensing and signal restoration performance. Moreover, the present invention compresses a signal using a compression matrix appropriate for the sparsity information of the input signal, thereby enhancing the compression efficiency in the compressive sensing and improving the signal restoration performance.
Abstract:
PURPOSE: A multiple channel signal detection method and apparatus thereof are provided to effectively embody a system by reducing time and calculation rates which are necessary for detecting signals in multiple channels. CONSTITUTION: A transmission and reception apparatus(530) senses channels. A processor(510) technically contacts to the transmission and reception apparatus. The processor detects the signals based on interesting section sensing data. The processor is established in order to determine the nonexistence of a detection target signal in each channel which constructs interesting sections when the detection target signal is not detected.
Abstract:
According to the present invention, a method for wideband spectrum sensing using compressive sensing comprises the steps of: acquiring a sampling signal by applying a modulated wideband converter (MWC) to a received signal; and acquiring a restoration signal corresponding to the received signal by using a compressive sensing restoration algorithm from the sampling signal. A mixing signal multiplied by the received signal when applying the MWC is a signal transformed from a first mixing signal having a periodic waveform. The method includes a second mixing signal to remove a partial frequency area from the received signal through the application of the MWC.
Abstract:
PURPOSE: A sensing method and a device thereof are provided to reduce the size of hardware for sensing a spectrum by omitting a sensing receiver. CONSTITUTION: A signal reception unit receives a wireless signal by using a part of a data receiver and converts the received wireless signal into a base signal(S910). A signal distribution unit distributes the received base signal(S920). A CS(Compressive Sensing) unit executes the CS of the distributed signal(S930). [Reference numerals] (AA) Start; (BB) End; (S910) Receive a base signal; (S920) Distribute the base signal; (S930) Compressive sensing