Results 11 to 20 of about 3,422,913 (297)

Evolutionary strategy search algorithm for fast block motion estimation [PDF]

open access: yes, 2006
The evolutionary strategy search (ESS) algorithm is a novel method for implementing fast block motion estimation (ME) using evolutionary strategy (ES).
Loo, KK, Hay, J
core   +6 more sources

Using Sequence-to-Sequence Models for Carrier Frequency Offset Estimation of Short Messages and Chaotic Maps [PDF]

open access: yes, 2022
Deep Learning methods have produced good carrier frequency offset estimations for short message sequences in comparison with methods based on the Fast Fourier Transform. However, these performance gains were observed for short ranges of frequency offsets,
Deo, Ravinesh C.   +4 more
core   +1 more source

Blind Estimation of Spreading Code Sequence of QPSK-DSSS Signal Based on Fast-ICA

open access: yesInformation, 2023
Most of the existing estimation methods of spreading code sequence are not suitable for the QPSK-DSSS. We propose a spreading code sequence estimation method based on fast independent component analysis (Fast-ICA). It mainly includes signal preprocessing,
Lu Xu, Xiaxia Liu, Yijia Zhang
doaj   +1 more source

Blind Estimation of Direct Sequence Spread Spectrum Signal Based on MCMC-UKF [PDF]

open access: yesJisuanji gongcheng, 2019
Aiming at the problem of spreading code and information sequence blind estimation for long code Direct Sequence Spread Spectrum(DSSS) signal,this paper proposes a joint estimation algorithm based on overlapping segment Markov Chain Monte Carlo-Unscented ...
MA Chao, ZHANG Limin
doaj   +1 more source

Hierarchical Sequence Compaction For Power Estimation [PDF]

open access: yesProceedings of the 34th Design Automation Conference, 1997
This paper presents an effective technique forcompacting a large sequence of input vectors into a muchsmaller one such that when the two sequences are applied toany circuit, the resulting power dissipations are nearly thesame. Specifically, this paper introduces the hierarchicalmodeling of Markov chains as a flexible framework forcapturing not only ...
Radu Marculescu   +2 more
openaire   +1 more source

Low-Complexity Detection of High-Order QAM Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2017
Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal transmission technique to considerably improve the spectral efficiency. This paper presents the first attempt in the literature to estimate the transmit data symbols of any high-order ...
Ebrahim Bedeer   +2 more
doaj   +1 more source

Coder-oriented matching criteria for motion estimation [PDF]

open access: yes, 1996
Classical matching criteria for motion estimation determine the match quality by operating in the spatial domain. The resulting displaced frame difference signal is, however, compressed by means of frequency transformations, and any optimal matching ...
Czerepinski, PJ, Bull, DR
core   +1 more source

A Very Low Complexity Successive Symbol-by-Symbol Sequence Estimator for Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2017
In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity sequence estimation techniques based on concepts of successive interference
Ebrahim Bedeer   +2 more
doaj   +1 more source

Estimating the fitness effect of an insertion sequence [PDF]

open access: yesJournal of Mathematical Biology, 2012
Since its discovery, mobile DNA has fascinated researchers. In particular, many researchers have debated why insertion sequences persist in prokaryote genomes and populations. While some authors think that insertion sequences persist only because of occasional beneficial effects they have on their hosts, others argue that horizontal gene transfer is ...
Bichsel Manuel   +2 more
openaire   +3 more sources

Spatially correlated channel estimation for RIS‐assisted MIMO systems with correlated gaussian perturbation

open access: yesIET Communications, 2023
This paper studies the problem of spatially correlated channel estimation for reconfigurable intelligent surface (RIS)‐assisted multiple‐input multiple‐output (MIMO) systems with arbitrarily correlated Gaussian perturbation.
Changjian Qin, Pinchang Zhang, Ji He
doaj   +1 more source

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