Apparatus and method for signal detection in a cognitive radio-based wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorPandharipande Ashish
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Abstract
An apparatus and method for signal detection in a CR-based wireless communication system are provided. In the signal detection apparatus, a cyclic power calculator calculates the power spectral density of a cyclo-stationary and periodical signal to be detected with respect to a cyclic frequency and calculates optimum statistics using the power spectral density. A signal detector determines whether a signal exists or not according to the optimum statistics.
Claims21
A signal detection apparatus in a Cognitive Radio (CR)-based wireless communication system, comprising:
- a cyclic power calculator for calculating a power spectral density of a cyclo-stationary and periodic signal, and calculating optimum statistics using the power spectral density;
- and
- a signal detector for determining whether a signal to be detected is existent or not according to the optimum statistics;
- wherein the calculated power spectral density includes a power spectral density of the signal to be detected and a power spectral density of a current received signal, and the optimum statistics are calculated using the power spectral density of the signal to be detected and the current received signal.
A signal detection apparatus in a Cognitive Radio (CR)-based wireless communication system, comprising:
- a Discrete Fourier Transform (DFT) processor for performing a DFT on an input signal in response to the input signal being discrete, the DFT processor outputting DFT signals;
- a correlator for calculating a power spectral density of the input signal by correlating DFT signals received from the DFT processor;
- and
- a calculator for calculating optimum statistics using the power spectral density;
- wherein the calculated power spectral density includes a power spectral density of a signal to be detected and a power spectral density of a current received signal, and the optimum statistics are calculated using the power spectral density of the signal to be detected and the current received signal.
A signal detection method in a Cognitive Radio (CR)-based wireless communication system, the method comprising:
- calculating a power spectral density of a cyclo-stationary and periodical signal and calculating optimum statistics using the power spectral density;
- and
- determining whether a signal to be detected is existent or not according to the optimum statistics;
- wherein the calculated power spectral density includes a power spectral density of the signal to be detected and a power spectral density of a current received signal, and the optimum statistics are calculated using the power spectral density of the signal to be detected and the current received signal.
A signal detection method in a Cognitive Radio (CR)-based wireless communication system, comprising:
- performing a Discrete Fourier Transform (DFT) on an input signal in response to the input signal being discrete and outputting DFT signals;
- calculating a power spectral density of the input signal by correlating the DFT signals;
- and
- calculating optimum statistics using the power spectral density;
- wherein the calculated power spectral density includes a power spectral density of a signal to be detected and a power spectral density of a current received signal, and the optimum statistics are calculated using the power spectral density of the signal to be detected and the current received signal.
Dependencies are inferred from the claim text.