Results 11 to 20 of about 335,085 (264)

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

Entropy estimation of symbol sequences [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 1996
We discuss algorithms for estimating the Shannon entropy h of finite symbol sequences with long range correlations. In particular, we consider algorithms which estimate h from the code lengths produced by some compression algorithm. Our interest is in describing their convergence with sequence length, assuming no limits for the space and time ...
Schürmann, Thomas, Grassberger, Peter
openaire   +3 more sources

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

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

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

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

Estimation and Reliability of Molecular Sequence Alignments [PDF]

open access: yesBiometrics, 1995
The problem of estimating the relatedness of a pair of biological sequences is addressed. A stochastic model of sequence evolution is described that allows insertion and deletion as well as replacement of amino acid residues (or substitution of nucleotides) over time.
Thorne, Jeffrey L., Churchill, Gary A.
openaire   +3 more sources

Symmetric Training Sequence-Based Carrier Frequency Offset Estimation Scheme for Coherent Free-Space Optical Communication

open access: yesIEEE Photonics Journal, 2022
In this paper, a symmetric training sequence-based (STSB) carrier frequency offset estimation (FOE) scheme for coherent free-space optical (CFSO) communication is proposed.
Xinyu Tang   +4 more
doaj   +1 more source

Evaluating automatically estimated chord sequences [PDF]

open access: yes2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013
Evaluating Automatically Estimated Chord ...
Johan Pauwels, Geoffroy Peeters
openaire   +2 more sources

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