Results 21 to 30 of about 29,669 (249)
Adaptive Coded Modulation for OFDM System
Journal of Engineering, 2023 This paper studies the adaptive coded modulation for coded OFDM system using punctured convolutional code, channel estimation, equalization and SNR estimation.
Serkout N. Abdullah +1 more
doaj +1 more source
Subspace Method-based Blind SNR Estimation for Communication between Orbiters in Mars Exploration
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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DOA estimation algorithm based on spread spectrum sequence in low signal-to-noise ratio
EURASIP Journal on Wireless Communications and Networking, 2022 Spread spectrum communication is a common communication method in underwater communication. Based on the space-time processor received by the array, it can filter the signals arriving along each path separately.
Feng Zhou +4 more
doaj +1 more source
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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A non-data-aided SNR estimator based on maximum likelihood method for communication between orbiters
EURASIP Journal on Wireless Communications and Networking, 2020 Signal-to-noise ratio (SNR) is an important metric for performance assessment in numerous scenerios. In order to ensure the reliability and effectiveness of the system performance, plenty of situations require the information of SNR estimate. At the same
Zezhou Sun, Xin Gong, Fan Lu
doaj +1 more source
Joint Model-Order and Robust DoA Estimation for Underwater Sensor Arrays
Sensors, 2023 The direction-of-arrival (DoA) estimation algorithms have a fundamental role in target bearing estimation by sensor array systems. Recently, compressive sensing (CS)-based sparse reconstruction techniques have been investigated for DoA estimation due to ...
Umar Hamid +2 more
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An improved SNR estimator for speech enhancement
2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008 In this paper, we propose an MMSE a priori SNR estimator for speech enhancement. This estimator has similar benefits to the well-known decision-directed approach, but does not require an ad-hoc weighting factor to balance the past a priori SNR and current ML SNR estimate with smoothing across frames.
Ren, Yao, Johnson, Michael T.
openaire +2 more sources
Multitaper Estimation Of The Coherence Spectrum In Low Snr [PDF]
, 2014 Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal ...
Brynolfsson, Johan, Sandsten, Maria
openaire +3 more sources
Sensitivity analysis of the channel estimation deviation to the MAP decoding algorithm
Tongxin xuebao, 2006 As a necessary input parameter for MAP decoding algorithm,SNR was normally obtained from the channel estimation unit.Corresponding research indicated that SNR estimation deviation degraded significantly the performance of Turbo decoding.MAP decoding ...
WAN Ke, FAN Ping-zhi
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Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley +1 more source