Results 61 to 70 of about 1,321,155 (184)

Density estimation for $\beta$-dependent sequences

open access: yes, 2016
We study the Lp-integrated risk of some classical estimators of the density, when the observations are drawn from a strictly stationary sequence. The results apply to a large class of sequences, which can be non-mixing in the sense of Rosenblatt and long-range dependent. The main probabilistic tool is a new Rosenthal-type inequality for partial sums of
Dedecker, Jérôme, Merlevède, Florence
openaire   +3 more sources

Adaptive Three-phase Estimation of Sequence Components and Frequency Using $H_{\infty}$ Filter Based on Sparse Model

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
The estimation of sequence or symmetrical components and frequency in three-phase unbalanced power system is of great importance for protection and relay.
Umamani Subudhi   +2 more
doaj   +1 more source

An Anti-Interference Synchronization for OFDM Systems Based on Scrambling Sequence

open access: yesIEEE Access, 2019
To improve the performance of the synchronization in OFDM systems in the presence of interference, a new synchronization algorithm based on scrambling sequence is proposed in this paper, which redesigns the training sequence with the constant amplitude ...
Min Yang, Fanglin Gu, Jun Liu, Ling Wang
doaj   +1 more source

Application of hidden markov models to blind channel estimation and data detection in a gsm environment [PDF]

open access: yes, 1996
In this paper, we present an algorithm based on the Hidden Markov Models (HMM) theory to solve the problem of blind channel estimation and sequence detection in mobile digital communications.
Antón Haro, Carles   +2 more
core  

Optimal Estimation and Prediction for Dense Signals in High-Dimensional Linear Models [PDF]

open access: yes, 2012
Estimation and prediction problems for dense signals are often framed in terms of minimax problems over highly symmetric parameter spaces. In this paper, we study minimax problems over l2-balls for high-dimensional linear models with Gaussian predictors.
Dicker, Lee
core  

Improved Method for Interleaving Parameter Estimation in a Non-Cooperative Context

open access: yesIEEE Access, 2019
In a non-cooperative context, a sequence acquired from remote sensing through satellites and aircraft can be recognized as an unknown sequence to a receiver who lacks the information of the transmission parameters.
Geunbae Kim, Mingyu Jang, Dongweon Yoon
doaj   +1 more source

Pilot Beam Sequence Design for Channel Estimation in Millimeter-Wave MIMO Systems: A POMDP Framework

open access: yes, 2014
In this paper, adaptive pilot beam sequence design for channel estimation in large millimeter-wave (mmWave) MIMO systems is considered. By exploiting the sparsity of mmWave MIMO channels with the virtual channel representation and imposing a Markovian ...
Kim, Donggun   +3 more
core   +1 more source

Feedforward pilot-aided carrier synchronization using a DCT basis expansion [PDF]

open access: yes, 2009
This contribution deals with phase noise estimation from pilot symbols. The phase noise process is approximated by an expansion of Discrete Cosine-Transform (DCT) basis functions containing only a few terms.
Bhatti, Jabran, Moeneclaey, Marc
core  

Attention-Based Sequence Learning Model for Travel Time Estimation

open access: yesIEEE Access, 2020
Travel time estimation (TTE) on a specific route is a challenging task since the complex road network structure and hard-captured temporal patterns. Many excellent methods have been proposed to address the aforementioned problems.
Zhong Wang   +3 more
doaj   +1 more source

Channel estimation for time varying channel based on decision directed technique in OFDM mobile systems

open access: yesTongxin xuebao, 2006
A channel estimation method was proposed based on decision directed technique and pilot tracking for OFDM WLANS with mobile terminals. The result of training sequence based estimation was used as the initialization of decision directed technique.
CHEN Hui, CHEN Xiao-guang
doaj   +2 more sources

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