Results 11 to 20 of about 36,429 (287)
Subspace Method-based Blind SNR Estimation for Communication between Orbiters in Mars Exploration [PDF]
ITM Web of Conferences, 2017 In Mars exploration the effective time of communication between orbiters is short, and the relative distance and gesture between them change fast. The signal to noise ratio (SNR) estimation is required in receiver to change adaptively the data rate in ...
Sun Ze-Zhou +2 more
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Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems
Journal of Computer Networks and Communications, 2018 The estimation of signal-to-noise ratio (SNR) is a major issue in wireless orthogonal frequency-division multiplexing (OFDM) system. In OFDM system, each frame starts with a preamble symbol that facilitates the SNR estimation. However, the performance of
Abid Muhammad Khan +5 more
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High SNR Linear Estimation of Vector Sources
IEEE Wireless Communications Letters, 2014 In this letter, we extend our prior work and consider decentralized estimation of unknown random vectors under high observation signal-to-noise ratio (SNR). A linear model is considered for decentralized estimation of vector sources. Observation models and sensor operations are both linear.
Alireza Shahan Behbahani +2 more
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New SNR estimation algorithm based on relevance vector machine [PDF]
Tongxin xuebao, 2013 A new SNR estimation algorithm based on relevance vector machine (RVM) was proposed,it can not only be used under the flat fading channel,but also meet the request of larger estimation range and higher estimation accuracy of PSK.The estimation model was ...
Bo HAN +4 more
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Non Data-Aided SNR Estimation for UAV OFDM Systems
Algorithms, 2020 Signal-to-noise ratio (SNR) estimation is essential in the unmanned aerial vehicle (UAV) orthogonal frequency division multiplexing (OFDM) system for getting accurate channel estimation.
Junfang Li +3 more
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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
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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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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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Optimization Algorithm for DOA Estimation of a Shallow Sea Target Based on Active Time Reversal [PDF]
Xibei Gongye Daxue Xuebao, 2018 Time reversal technique is applied to the DOA estimation of a shallow sea target, and a method based on active time reversal (ATR) is proposed to achieve correct estimation under multipath and low signal-to-noise (SNR) conditions. Combining the classical
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