Results 11 to 20 of about 2,207,221 (306)
SNR Estimation in Linear Systems With Gaussian Matrices [PDF]
IEEE Signal Processing Letters, 2017 This letter proposes a highly accurate algorithm to estimate the signal-to-noise ratio (SNR) for a linear system from a single realization of the received signal. We assume that the linear system has a Gaussian matrix with one sided left correlation. The
Mohamed A. Suliman +3 more
semanticscholar +6 more sources
Blind SNR estimation based on cyclostationarity
Tongxin xuebao, 2006 Upsampling and shaping filtering introduce the cyclostationarity of transmit signals. Based on the cyclosta-tionary statistics of signals, a blind SNR estimator in AWGN channel was proposed.
HUA Meng, ZHU Jin-kang, GONG Ming
doaj +3 more sources
Improved Weighted Matching Pursuit based Channel Estimation Algorithm
Guangtongxin yanjiu, 2022 Compressive sensing based matching pursuit algorithm can estimate the channel state information of communication system with shorter pilot sequences. It has the advantages of lower computational complexity and less number of pilots.
Zhi-guo Lü, Meng QI, Hong-xiang SHAO
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Signal-to-noise ratio (SNR) is an important radiation characteristic parameter for remote sensing image quality assessment as well as a key performance indicator for remote sensing sensors.
Wenzhong Tian +5 more
doaj +1 more source
Noise estimation in single coil MR images
Biomedical Engineering Advances, 2021 Magnetic resonance (MR) signal is degraded by acquisition noise. Estimation and removal of noise from MR images is essential for analysis and further pre-processing. The work proposes a new method for noise variance estimation in single coil magnitude MR
Archana Chaudhari, Jayant Kulkarni
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Signal estimation in cognitive satellite networks for satellite-based industrial internet of things [PDF]
, 2021 Satellite industrial Internet of Things (IIoT) plays an important role in industrial manufactures without requiring the support of terrestrial infrastructures.
Chen, Yunfei +5 more
core +1 more source
Joint Channel Estimation Algorithm Based on DFT and DWT
Applied Sciences, 2022 Channel estimation is an important component of orthogonal frequency division multiplexing (OFDM) systems. The existence of virtual subcarriers leads to energy spreading in the time-domain when using Inverse Fast Fourier Transform (IFFT), resulting in ...
Zhe Zhang, Xin Bian, Mingqi Li
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Continuous Hidden Markov Model Based Spectrum Sensing with Estimated SNR for Cognitive UAV Networks
Sensors, 2022 In this paper, to enhance the spectrum utilization in cognitive unmanned aerial vehicle networks (CUAVNs), we propose a cooperative spectrum sensing scheme based on a continuous hidden Markov model (CHMM) with a novel signal-to-noise ratio (SNR ...
Yuqing Feng +3 more
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Entropy-Based Non-Data-Aided SNR Estimation [PDF]
2019 53rd Asilomar Conference on Signals, Systems, and Computers, 2019 A non-data-aided SNR estimation of a communication channel is addressed in this paper. The main contribution relies on the relationship between an entropy measure of a given constellation and the link quality. The main advantage is that the second order Rényi entropy is invariant to the rotation of the constellation and it is not envelope-based as the ...
Cabrera Estanyol, Ferran de +1 more
openaire +2 more sources
Implementation of SNR estimation based energy detection on USRP and GNU radio for cognitive radio networks [PDF]
2017 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), 2017 Development of smart spectrum sensing techniques is the most important task in the design of a cognitive radio system which uses the available spectrum efficiently.
Bhavana Mehta +3 more
semanticscholar +1 more source