10 天前 - … Cognitive Radio is widely used not only in the signal recog… Spectrum sensing
serves as the initial stage of cognitive … of single node sensing to noise uncertainty, literature [29] …

11 天前 - … In general, uncertainty in channels and interference … Spectrum sensing is a major
function of cognitive radio. To … 2 represents the observed signal in the cognitive radio and DN …

43 天前 - … The ED is considered to be a uniformly most powerful test (UMPT) when the signal
… uncertainty (NVU), which can result in an inability to detect PU signals below a certain signal-…

57 天前 - … To address the shortage of wireless spectrum resources … of Vehicles, spectrum
sensing technology in cognitive radio is … different signal-to-noise ratios and noise uncertainty to …

68 天前 - … of energy detection (ED) signal-to-… cognitive radio (CR) concept has arisen in this
context as a promising DSA solution to the RF spectrum shortage by using spectrum sensing (…

71 天前 - … knowledge of the primary signal, and has been widely used in recent years.
However, it is sensitive to noise variance uncertainty (NVU) and suffers from the signal-to-noise …

76 天前 - … cognitive nodes must implement signal detection techniques to identify unused
bands for transmission. In the present work, we study different spectrum sensing … uncertainties, …

77 天前 - … to jointly consider the impact of short-term uncertainty in vehicle velocity. … detection
method that uses the Doppler frequency shift of the signal to verify the sender of the signal …

106 天前 - … Spectrum sensing technique should ensure the reliable detection of the primary
user signal in various scenarios like fading channels, Noise uncertainty and Hidden node …

106 天前 - … Cognitive radio systems rely heavily on spectrum sensing algorithms to detect
spectrum occupancy, signal … performance degradation under noise uncertainty and low signal-to-…