maximum likelihood decoder matlab code
Báo cáo hóa học: " Maximum Likelihood Turbo Iterative Channel Estimation for Space-Time Coded Systems and Its Application to Radio Transmission in Subway Tunnels" potx
... trans-mitted coded sequence. At reception, optimum maximum likelihood (ML) decoding can be carried out by consideringthe hypertrellis associated with the concatenation of the twocomponent codes. ... Processing 2004:5, 727–739c 2004 Hindawi Publishing Corporation Maximum Likelihood Turbo Iterative ChannelEstimation for Space-Time Coded Systemsand Its Application to Radio Transmissionin Subway ... turbo equalization, turbo channel estimation, maximum likelihood channel estimation, GSM, sub-way tunnels.1. INTRODUCTIONRecently, the so-called Turbo codes [1, 2, 3] have revealedthemselves as...
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Tài liệu Bài 9: ICA by Maximum Likelihood Estimation ppt
... 9ICA by Maximum Likelihood EstimationA very popular approach for estimating the independent component analysis (ICA)model is maximum likelihood (ML) estimation. Maximum likelihood estimation ... all.9.2 ALGORITHMS FOR MAXIMUM LIKELIHOOD ESTIMATIONTo perform maximum likelihood estimation in practice, we need an algorithm toperform the numerical maximization of likelihood. In this section, ... is actually equal to the likelihood. This means thatinfomax is equivalent to maximum likelihood estimation.9.4 EXAMPLESHere we show the results of applying maximum likelihood estimation to...
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Ebook - (Ferreira, 2009) MATLAB codes for finite element analysis
... stresses (post-processing)2.5 First problem and first MATLAB code To illustrate some of the basic concepts, and introduce the first MATLAB code, we consider a problem, illustrated in figure 2.2 ... the book. A deeper study of MATLAB can be obtained frommany MATLAB books and the very useful help of MATLAB. 1.2 MatricesMatrices are the fundamental object of MATLAB and are particularly importantin ... F-norm, ∞-normcond Conditioning number of 2-normrank Rank of a matrix2.6 New code using MATLAB structures 31This code calls solutionStructure.m which computes displacements by eliminatinglines...
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Báo cáo sinh học: " Research Article Inverse Modeling of Respiratory System during Noninvasive Ventilation by Maximum Likelihood Estimation" doc
... Processing,Prentice-Hall, Englewood Cliffs, NJ, USA, 1993.[12] T. T. Pham and R. J. P. DeFigueiredo, Maximum likelihood estimation of a class of non-Gaussian densities with appli-cation to Lp deconvolution,” ... Processing, vol. 37, no. 1, pp. 73–82, 1989.[13] B. T. Sieskul and S. Jitapunkul, “An asymptotic maximum likelihood for estimating the nominal angle of a spatiallydistributed source,” International ... logarithmic likelihood func tion with respectto σ2r:∂ logLy1:N; Θ, σr, pr∂σr= 0. (11)With the help of the conditional probability theorem, by(10), the logarithmic likelihood...
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Báo cáo sinh học: " Research Article Maximum-Likelihood Semiblind Equalization of Doubly Selective Channels Using the EM Algorithm" docx
... results for the following equaliza-tion algorithms.(i) Maximum Likelihood equalization using perfectchannel knowledge.(ii) Maximum likelihood equalization with channel esti-mation based only ... schemes and to perform in many cases closeto the maximum- likelihood equalizer with perfect channel knowledge. Our proposed method is also suitable for coded systemsand as a building block for Turbo ... IEEETransactions on Communications, vol. 42, no. 2–4, pp. 941–950, 1994.[12] R. A. Iltis, “A Bayesian maximum- likelihood sequence esti-mation algorithm for a priori unknown channels and symboltiming,”...
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Báo cáo hóa học: " Research Article Maximum Likelihood DOA Estimation of Multiple Wideband Sources in the Presence of Nonuniform Sensor Noise" pdf
... modified to carry outstep 1.4.2. Approximately concentrated maximum likelihood algorithm (AC-ML)In Section 4.1, an iterative maximum likelihood widebandDOA estimation algorithm is presented. ... all the constant terms,the log -likelihood function L(Ω) can be expressed asL(Ω)=−PN2log σ2−1σ2N/2k=1g(k)2. (7)It follows that the maximum likelihood estimator for Ω issimplyΩ ... parameters by maximum likelihood, ” in Proceedingsof the IEEE International Conference on Acoustics, Speech andSignal Processing (ICASSP ’86), pp. 2819–2822, Tokyo, Japan,1986.[8] A. G. Jaffer, “Maximum...
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Báo cáo hóa học: " Research Article Maximum Likelihood Timing and Carrier Synchronization in Burst-Mode Satellite Transmissions" pot
... determines the locationνMof the maximum over this set. The second step (fine search) makes an inter-polation between the samples P(νn) and computes the local maximum nearest toνM. It should ... might fear, the maximization ofthe likelihood function Λ(ν, ε, ϕ) needs not be made on athree-dimensional domain. Actually, the location (ν, ε, ϕ)ofthe maximum can be found through simple ... and NetworkingVolume 2007, Article ID 65058, 8 pagesdoi:10.1155/2007/65058Research Article Maximum Likelihood Timing and Carrier Synchronization inBurst-Mode Satellite TransmissionsMichele...
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Báo cáo hóa học: " Research Article Maximum Likelihood DOA Estimation of Multiple Wideband Sources in the Presence of Nonuniform Sensor Noise" doc
... modified to carry outstep 1.4.2. Approximately concentrated maximum likelihood algorithm (AC-ML)In Section 4.1, an iterative maximum likelihood widebandDOA estimation algorithm is presented. ... all the constant terms,the log -likelihood function L(Ω) can be expressed asL(Ω)=−PN2log σ2−1σ2N/2k=1g(k)2. (7)It follows that the maximum likelihood estimator for Ω issimplyΩ ... stepwise concentratesthe log -likelihood function, while the second is a noniter-ative algorithm that maximizes the derived approximately-concentrated (AC) log -likelihood function.The rest...
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Báo cáo hóa học: " Research Article A Maximum Likelihood Estimation of Vocal-Tract-Related Filter Characteristics for Single Channel Speech Separation" doc
... un-derlying signals.Now we apply fy(y) in a maximum likelihood frame-work to estimate the parameters of the underlying signals.The main objective of the maximum likelihood estimator isto find the kth ... mixture,(iv) decode the two Gaussian mixture’s mean vectorswhich satisfy the maximum likelihood criterion(23) described in Section 7,(v) recover the underlying signals using the decodedmean vectors, ... multipitchdetection, and maximum likelihood estimation in which weformulate the proposed approach. In particular, we followthe procedure for obtaining the maximum likelihood estima-tor by...
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Báo cáo hóa học: " Two-Stage Maximum Likelihood Estimation (TSMLE) for MT-CDMA Signals in the Indoor Environment" doc
... and current data bit Iq1,n, is Gaussian with theTwo-Stage Maximum Likelihood Estimation for MT-CDMA 57Serial datastreamDataencoderSerial-to-parallel dataconverterexp( jω0t)exp( jω1t)exp( ... estimates of the data bit values are com-puted. These estimated data bits are decoded at the output ofthe decoder according to their signs.TSMLE provides manifold advantages. As pointed out ... October 2003; Revised 15 March 2004This paper proposes a two-stage maximum likelihood estimation (TSMLE) technique suited for multitone code division multipleaccess (MT-CDMA) system. Here, an analytical...
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Báo cáo hóa học: " Estimation of Road Vehicle Speed Using Two Omnidirectional Microphones: A Maximum Likelihood Approach" doc
... nextsection, which will be shown to compare favorably to the in-direct method of [15].3. APPROXIMATE MAXIMUM LIKELIHOOD ESTIMATE3.1. DerivationConsider first the problem of estimating v0without knowl-edge ... pp. 67–94, 1996.[10] J. W. Betz, “Comparison of the deskewed short-time cor-relator and the maximum likelihood correlator,” IEEETrans. Acoustics, Speech, and Signal Processing, vol. 32, no. 2,pp. ... Trans. Acoustics,Speech, and Signal Processing, vol. 29, no. 3, 1981.[13] J. A. Stuller, Maximum- likelihood estimation of time-varying delay—part I,” IEEE Trans. Acoustics, Speech, and Sig-nal...
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Báo cáo hóa học: " A Maximum Likelihood Approach to Least Absolute Deviation Regression" potx
... Journal on Applied Signal Processing 2004:12, 1762–1769c 2004 Hindawi Publishing CorporationA Maximum Likelihood Approach to Least AbsoluteDeviation RegressionYinbo LiDepartment of Electrical ... the optimization needed to solve theLAD regression problem can be viewed as a sequence of maximum likelihood estimates (MLE) of location. The derived algorithmreduces to an iterative procedure ... implementation complexity.Keywords and phrases: least absolute deviation, linear regression, maximum likelihood estimation, weighted median filters.1. INTRODUCTIONLinear regression has long been...
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Báo cáo hóa học: " Analysis of Minute Features in Speckled Imagery with Maximum Likelihood Estimation" pdf
... Feature Analysis under Speckle with Maximum Likelihood 24853020100Iteration−56−55−54−53−52−51Reduced log -likelihood Figure 9: Function evaluation at iterations of ... situation (2) (denoted z2). For each sample, the likelihood function was computed and, in order to visualizeFeature Analysis under Speckle with Maximum Likelihood 2489250200150100500Sample−15−10−50α(a)250200150100500Sample−14−12−10−8−6−4−20α(b)250200150100500Sample−25−20−15−10−50α(c)250200150100500Sample−40−30−20−100α(d)Figure ... and used to choose a strategy for computing maximum likelihood estimatesthat is resistant to outliers.Keywords and phrases: image analysis, inference, likelihood, computation, optimization.1....
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Báo cáo sinh học: "Restricted maximum likelihood estimation for animal models using derivatives of the likelihood" pptx
... byrestricted maximum Likelihood. Genet Select Evol 23, 67-83Meyer K (1992) DFREML Version 2.1 - Programs to Estimate Variance Componentsby Restricted Maximum Likelihood Using ... parameters was no more than 6p times thatfor a likelihood evaluation.MAXIMISING THE LIKELIHOOD Methods to locate the maximum of the likelihood function in the context ofvariance ... derivative-free algorithm.restricted maximum likelihood / derivative / algorithm / variance component esti-mationRésumé - Estimation du maximum de vraisemblance restreinte...
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