Results 311 to 320 of about 14,184,159 (383)
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IRS-Enhanced Energy Detection for Spectrum Sensing in Cognitive Radio Networks
IEEE Wireless Communications Letters, 2021Energy detection is of crucial importance in cognitive radio networks. However, its performance is poor when the channel fading is severe, which causes interference to the primary users.
Wei Wu +6 more
semanticscholar +1 more source
International Journal of Modern Physics C, 2012
We apply the mathematics of cognitive radio to a single receiver to obtain a new coherent energy metric. This allows us to derive the time correlation law separating Gaussian colored noise from coherent signal energy.
P. D. MORLEY, JERRY W. BROWN
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We apply the mathematics of cognitive radio to a single receiver to obtain a new coherent energy metric. This allows us to derive the time correlation law separating Gaussian colored noise from coherent signal energy.
P. D. MORLEY, JERRY W. BROWN
openaire +1 more source
Simultaneous transmission, detection, and energy harvesting
Optics Letters, 2021Due to the electro-optic property of InGaN multiple quantum wells, a III-nitride diode can provide light transmission, photo detection, and energy harvesting under different bias conditions. Made of III-nitride diodes arrayed in a single chip, the combination allows the diodes to transmit, detect, and harvest visible light at the same time.
Xumin Gao +8 more
openaire +2 more sources
Computer Communications, 2020
Cognitive radio (CR) is a smart communication innovation in the development of the network. With advances in remote communications, the issue of bandwidth has proven to be more unique.
B. Sarala +2 more
semanticscholar +1 more source
Cognitive radio (CR) is a smart communication innovation in the development of the network. With advances in remote communications, the issue of bandwidth has proven to be more unique.
B. Sarala +2 more
semanticscholar +1 more source
Multiband detection of energy fluctuations
The Journal of the Acoustical Society of America, 1995The filtering properties of the ear permit the auditory periphery output to be viewed as a bank of parallel quasi-independent channels. The purpose of this study was to examine how information contained among the independent channels is combined. Four related experiments were undertaken in which the detection of an energy change within a channel was ...
J H, Grose, J W, Hall
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Energy-Detection UWB Receivers with Multiple Energy Measurements
IEEE Transactions on Wireless Communications, 2007This paper deals with a novel energy-detection receiver for ultra-wideband systems operating in dense multi-path environments. For binary PPM modulation we propose a detection scheme that operates on signal energy measurements taken on small fractions (bins) of the symbol period.
D'AMICO, ANTONIO ALBERTO +2 more
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Energy-aware objects abandon / removal detection
2011 8th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS), 2011A major issue for video surveillance embedded systems is the need to continuously perform a number of highly demanding operations even when the analyzed scene does not show peculiar or interesting features, so that power consumption is a critical issue.
LANZA, ALESSANDRO +4 more
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Distributed recursive energy detection
2014 IEEE Wireless Communications and Networking Conference (WCNC), 2014Recent studies have shown that, while the available licensed radio spectrum becomes more occupied, the assigned spectrum is significantly underutilized. To alleviate the situation, cognitive radio (CR) technology has been proposed to provide an opportunistic access to the licensed spectrum areas.
Ahti Ainomae, Tonu Trump, Mats Bengtsson
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Comparative Study of Energy Detection and Matched Filter Based Spectrum Sensing Techniques
International Conference on Computational Intelligence and Communication Networks, 2020The inefficient utilization of the radio spectrum leads to the invention of new techniques that help those users with no access or license to use the spectrum, whenever spectrum hole or free space is available.
A. Parvathy, Gayathri Narayanan
semanticscholar +1 more source
2006 Canadian Conference on Electrical and Computer Engineering, 2006
Detection of straight lines in an image is a fundamental requirement for many applications in computer vision. We formulate the straight line detection task as an energy minimization problem. This formulation helps the detection of lines in a global manner in contrast to the local detection methods used in conventional algorithms.
Ranga Rodrigo +2 more
openaire +1 more source
Detection of straight lines in an image is a fundamental requirement for many applications in computer vision. We formulate the straight line detection task as an energy minimization problem. This formulation helps the detection of lines in a global manner in contrast to the local detection methods used in conventional algorithms.
Ranga Rodrigo +2 more
openaire +1 more source