Results 31 to 40 of about 144,869 (263)

Bayesian Bounds on Parameter Estimation Accuracy for Compact Coalescing Binary Gravitational Wave Signals [PDF]

open access: yes, 1997
A global network of laser interferometric gravitational wave detectors is projected to be in operation by around the turn of the century. Here, the noisy output of a single instrument is examined.
A. Abramovici   +35 more
core   +2 more sources

Pilot-Based Time Domain SNR Estimation for Broadcasting OFDM Systems

open access: yesJournal 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
doaj   +1 more source

Sensitivity and parameter-estimation precision for alternate LISA configurations [PDF]

open access: yes, 2008
We describe a simple framework to assess the LISA scientific performance (more specifically, its sensitivity and expected parameter-estimation precision for prescribed gravitational-wave signals) under the assumption of failure of one or two inter ...
Arnaud K A   +15 more
core   +2 more sources

Performance Enhancement of Decision Directed SNR Estimation by Correction Scheme of SNR Estimation Error [PDF]

open access: yesThe Journal of Korea Navigation Institute, 2012
In this paper, the SNR estimation error of Decision Directed SNR estimation method in AWGN is investigated, which uses samples received in reference decision region. In communication system receiver, when SNR estimation scheme using error vectors between ideal sample points and received sample points of reference region is adopted, the samples contain ...
openaire   +1 more source

Bioinspired auditory sound localisation for improving the signal to noise ratio of socially interactive robots [PDF]

open access: yes, 2006
In this paper we describe a bioinspired hybrid architecture for acoustic sound source localisation and tracking to increase the signal to noise ratio (SNR) between speaker and background sources for a socially interactive robot's speech recogniser system.
Erwin, Harry   +2 more
core   +2 more sources

Improved SNR estimation for BPSK and QPSK signals

open access: yesElectronics Letters, 2009
A novel non-data-aided SNR estimation technique for BPSK and QPSK modulations in complex additive white Gaussian noise (AWGN) is proposed. It uses the constant amplitude property of in-phase and quadrature components of these modulations to achieve an improved performance.
Evans, BG, Ijaz, I, Awoseyila A
openaire   +4 more sources

Nearest Neighbour Decoding and Pilot-Aided Channel Estimation in Stationary Gaussian Flat-Fading Channels

open access: yes, 2011
We study the information rates of non-coherent, stationary, Gaussian, multiple-input multiple-output (MIMO) flat-fading channels that are achievable with nearest neighbour decoding and pilot-aided channel estimation.
Asyhari, A. Taufiq   +2 more
core   +1 more source

Sensitivity analysis of the channel estimation deviation to the MAP decoding algorithm

open access: yesTongxin 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
doaj   +2 more sources

Non-Data-Aided Parameter Estimation in an Additive White Gaussian Noise Channel

open access: yes, 2005
Non-data-aided (NDA) parameter estimation is considered for binary-phase-shift-keying transmission in an additive white Gaussian noise channel. Cramer-Rao lower bounds (CRLBs) for signal amplitude, noise variance, channel reliability constant and bit ...
Brannstrom, Fredrik, Rasmussen, Lars K.
core   +2 more sources

Perceptually Motivated Wavelet Packet Transform for Bioacoustic Signal Enhancement [PDF]

open access: yes, 2008
A significant and often unavoidable problem in bioacoustic signal processing is the presence of background noise due to an adverse recording environment. This paper proposes a new bioacoustic signal enhancement technique which can be used on a wide range
Cohen I.   +8 more
core   +2 more sources

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