Results 251 to 260 of about 2,207,221 (306)

SNR Estimation with Heterogeneous Frames

2008 4th Advanced Satellite Mobile Systems, 2008
We study the problem of estimating the signal-to noise ratio (SNR) in linearly modulated systems. It is assumed that the frame of observations consists of several subframes, so that the symbols in different subframes are drawn from different constellations.
Marcos Alvarez-Diaz, Roberto Lopez-Valcarce, Carlos Mosquera   +2 more
openaire   +1 more source

Optical SNR estimation using machine learning

Journal of Optical Communications, 2021
Abstract A technique for the estimation of an optical signal-to-noise ratio (OSNR) using machine learning algorithms has been proposed. The algorithms are trained with parameters derived from eye-diagram via simulation in 10 Gb/s On-Off Keying (OOK) nonreturn-to-zero (NRZ) data signal.
Palash Rai, Rahul Kaushik
openaire   +1 more source

Multistage spectrum sensing scheme with SNR estimation

IET Communications, 2019
Multistage detection has inspired a heated debate due to its capacity to take full advantage of each detector. Motivated by this, an investigation into multistage spectrum sensing is conducted and a two-stage spectrum detector is proposed based on energy
Junsheng Mu, Xiaojun Jing, Jianxiao Xie, Yangying Zhang   +3 more
semanticscholar   +1 more source

Nonlinear SNR Estimation based on Power Profile Estimation in Hybrid Raman-EDFA Link

Optical Fiber Communications Conference and Exhibition
We demonstrate the nonlinear SNR estimation based on longitudinal power profile obtained with coherent receiver. The estimation error is less than 0.6 dB in WDM transmission over hybrid Raman-EDFA link.
Inwoong Kim, K. Sone, O. Vassilieva, S. Oda, P. Palacharla, T. Hoshida   +5 more
semanticscholar   +1 more source

Coherent snr estimator performance

IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004, 2005
Signal-to-noise ratio (SNR) is an important system parameter in mobile communication systems and other advanced communication systems. Coherent and noncoherent SNR estimators can be used to dynamically estimate SNR. In this paper, a coherent SNR estimator is proposed and its performance is provided.
openaire   +1 more source

SNR Estimation for 5G Satellite-to-Ground Communication in Ultra-Low SNR Environment Based on Channel Frequency Response Reconstruction

IEEE Communications Letters
Accurate estimation of transmission parameters is indispensable in 5G satellite-to-ground communication systems. However, the tricky problem in multipath fading channels is to accurately estimate the average signal-to-noise ratio (SNR) within the ...
Yuan-qing Zhao, Cheng Ju, Dongdong Wang, Na Liu, Luyang Guan, Peng Xie   +5 more
semanticscholar   +1 more source

Frequency rate estimation at high SNR

IEEE Transactions on Signal Processing, 1997
The problem of estimating the frequency rate-of-change of complex-valued frequency-modulated signals from noisy observations is considered. The performance of four related estimators is studied, both analytically and by means of simulations, and their relationship to the estimators proposed by Djuric and Kay (1990) and Lang and Musicus (1989) is ...
P. Handel, P. Tichavsky
openaire   +1 more source

SNR estimation in HF communications channel

2012 6th European Conference on Antennas and Propagation (EUCAP), 2012
The authors summarize methodology and survey results of SNR and BER estimation for HF medium-range communication links over the Estonian mainland. HF propagation and noise environment were monitored since recent years in order to provide support to military and paramilitary users.
T. Ruuben, M.-A. Meister, E. Lossmann, J. Berdnikova, U. Madar   +4 more
openaire   +1 more source

Improved SNR Estimator for QPSK Modulations

2010 International Conference on E-Product E-Service and E-Entertainment, 2010
A new non-data-aided signal-to-noise ratio estimator for QPSK modulations in additive white Gaussian noise is proposed. It uses a simplified structure to achieve a good performance with less computational complexity. Simulation results show that the new estimator has smaller bias than existing estimators. The small bias and low computational complexity
Guangzu Liu, Jianxin Wang, Wen Xue, Riqing Chen   +3 more
openaire   +1 more source

Implementation of SNR estimation algorithms, using LabVIEW Communications and GNU Radio Companion

2018 IEEE XXV International Conference on Electronics, Electrical Engineering and Computing (INTERCON), 2018
In this paper, SNR estimation algorithms are evaluated in digital receivers for BPSK and QPSK modulations in an AWGN channel, using LabVIEW Communications and GNU Radio Companion environments.
M. Chino, Hector Miyashiro, A. Luis
semanticscholar   +1 more source