Results 261 to 270 of about 168,550 (300)

SNR Maximization Hashing

IEEE Transactions on Information Forensics and Security, 2015
We propose a novel robust hashing algorithm based on signal-to-noise ratio (SNR) maximization to learn compact binary codes, where the SNR metric is used to select a set of projection directions, and one hash bit is extracted from each projection direction. We first motivate this approach under a Gaussian model for the underlying signals, in which case
Honghai Yu, Pierre Moulin
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An investigation of SNRs in the magellanic clouds—SNR B0450-708 and SNR B0455-687

AIP Conference Proceedings, 2001
We are studying the nature and the spatial distribution of ∼80 supernova remnants (SNRs) in the Magellanic Clouds (MCs). A multi-frequency comparison of these sources involves the latest radio, IR, optical and X-ray surveys with angular resolution of ∼1′. Their morphology, birth rate and overall properties are investigated and compared with SNRs in our
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An LDPC decoder with SNR information

2013 9th International Conference on Information, Communications & Signal Processing, 2013
In this work an LDPC decoder which complies with IEEE 802.11n is proposed and implemented. The code rate is 1/2 and the code length is 648. We used partially parallel structure to reduce the area. Additionally the SNR information is applied to improve the BER performance.
Kai-Jiun Yang, Shang-Ho Tsai, Heng-Chang Hsu   +2 more
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On the Blind SNR Estimation for IF Signals

First International Conference on Innovative Computing, Information and Control - Volume I (ICICIC'06), 2006
Signal-to-Noise Ratio (SNR) is a widely used significant parameter in communication systems. An eigenvector decomposition and subspace approach is employed for the blind SNR estimation for Intermediate Frequency (IF) signals in additive white Gaussian noise (AWGN) channel.
Dan Sui, Lindong Ge
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Study of the Surface Laplacian SNR

2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005
The surface Laplacian involves the second derivative of the potential. It will give different and perhaps more localized information concerning the sources that give rise to the surface potential distribution. In this article we study the SNR of the surface Laplacian, and figure out the measuring possibility of the surface Laplacian of some ...
Gang, Li, Yue, Wang, Ling, Lin, Wei, Jiang, Lili, Wang, Stephen C-Y, Lu, Walter G, Besio   +6 more
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A reduced complexity SNR estimator

IET Conference Publications, 2009
This paper presents a novel reduced complexity SNR estimator, whose performances are comparable with the maximum-likelihood estimator while saving one half of the floating point multiplications and one third of the floating point sums. A detailed statistical description of the estimate, as well as simulation results, are provided. (4 pages)
CANDREVA, ENZO ALBERTO, CORAZZA, GIOVANNI EMANUELE, VANELLI CORALLI, ALESSANDRO   +2 more
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Transmitter SNR for Maximum Coverage

IEEE Transactions on Broadcasting, 2008
The generally accepted notion that DTV coverage will not be materially improved if the transmitter's SNR were raised from 27 dB to 32 dB is shown to be true only for perfect links. In real world links a significant improvement in coverage would materialize.
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Fundamental Applicability of Spatial Modulation: High-SNR Limitation and Low-SNR Advantage

IEEE Journal on Selected Areas in Communications, 2019
Spatial modulation (SM) is viewed as a promising multi-antenna technology for future communications. Numerous works on SM have been done on the specific optimized designs and performance analysis mainly based on high signal-to-noise ratio (SNR) union bound approximation.
Yan-Yu Zhang, Jian-Kang Zhang 0002
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Photoionising Shocks in SNRS and AGN

Astrophysics and Space Science, 1995
A high velocity radiative shock, or one moving into high-metallicity gas, provides an efficient means to generate a strong local UV photon field. The optical emission from the shock and precursor region is dominated by the photoionised gas, rather than by the cooling region, and the total optical + UV emission scales as the mechanical energy flux ...
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SNR-Based Link Quality Estimation

2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
The ability to accurately estimate wireless link quality is critical to the performance of routing protocols and rate adaptation algorithms in wireless mesh networks. Current link quality estimation methods utilize the packet delivery ratio (PDR) measurement of periodic broadcast probes sent at the lowest transmission rate.
Wee Lum Tan, Peizhao Hu, Marius Portmann
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