Báo cáo hóa học: " Research Article New Technique for Improving Performance of LDPC Codes in the Presence of Trapping S" doc
Báo cáo hóa học: " Research Article New Technique for Improving Performance of LDPC Codes in the Presence of Trapping S" doc
... Yonghui Li Trapping sets are considered the primary factor for degrading the performance of low-density parity-check (LDPC) codes in the error-floor region. The effect of trapping sets on the performance ... analysis of trapping sets and theirimpact on LDPC codes has been addressed in [3, 5–9]. The main approaches for mitigating the impact of trapping setson LDPC codes are based on either introducing ... minimize their presence during code design as in [5, 7, 9]or by enhancing decoder performance in the presence of trapping sets as in [3, 6, 8]. The main disadvantage of the first approach, in...
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Báo cáo hóa học: " Research Article New Approaches for Channel Prediction Based on Sinusoidal Modeling" pdf
... range. The further ahead we are looking, the smaller the gain of the predictor is. The way the frequency error istaken into account can be interpreted as a convolution of the line spectrum of the ... measurement, whichindicates that there might be just one dominant sinusoid in the linear part of the channel, but more comparable dom-inant sinusoids in the remaining part. In subplot (d), oneamplitude ... of the first frequency. The presence of these sinusoids might explain the large variation of the channel amplitudes and nonlinearphaseinthismeasurement. In Figure 5, the parameter tracking using...
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Báo cáo hóa học: " Research Article Three Solutions for a Discrete Nonlinear Neumann Problem Involving the p-Laplacian Pasquale Candito1 and Giuseppina D’Agu`2 ı" pptx
... and the referencegiven therein. Recently, also the critical point theory has aroused the attention of manyauthors in the study of these problems 4–12. The main aim of this paper is to investigate ... our main tools are critical pointstheorems for functional of type Φ −λΨ which insure the existence at least three critical points for every λ belonging to well-defined open intervals. These theorems ... careful reading of the proofs of Theorems 2.1 and 2.2 shows that regarding to the regularity of the derivative of Φ and Ψ, it is enough to require only that Φand Ψare two continuousfunctionals...
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Báo cáo hóa học: " Research Article Busy Bursts for Trading off Throughput and Fairness in Cellular OFDMA-TDD" pptx
... to their desired BS benefit in the uplink. The reason for this opposite trend for the uplink and the downlinkis elaborated in the following. Due to the specific point-to-multipoint structure in ... without interference avoid-ance, both in the uplink and the downlink. The impact of the BB specific threshold parameter that controls the interference imposed on coexisting links in neighbouringcells ... DL” for the next framek + 1. Likewise, for uplink data transmitted by the MS in slot “Data UL,” the BB is transmitted by the intended BS in the downlink minislot “BB DL.” In summary, BB-OFDMA...
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Báo cáo hóa học: " Research Article A Dual Decomposition Approach to Partial Crosstalk Cancelation in a Multiuser DMT-xDSL Environment" docx
... mitigate the e ffect of crosstalk. How-ever, the complexity of crosstalk cancellation grows with the square of the number of lines in the binder. Fortunately, most of the crosstalk originates from ... the complexity of crosstalk cancelation grows with the square of the number of lines in the binder. Fortunately, most of the crosstalk originates from a limited number of lines and, for DMT-based ... performs near-optimally in an xDSL environ-ment.Even for these simple linear cancellers, the complexitygrows with the square of the number of lines. For example, in a binder of 8 VDSL lines...
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Báo cáo hóa học: " Research Article Image Resolution Enhancement via Data-Driven Parametric Models in the Wavelet Space" ppt
... 1(nonoverlapping) to 4 and then 16. In our current imple-mentation, we have adopted the averaging strategy in [22] in- stead of the Bayesian fusion formula in Section 4 (therefore,better performance is expected ... and reproduction in any medium, provided the original work is properly cited.1. INTRODUCTIONDepending on the presence of antialiasing filer, there are twoways of formulating the resolution enhancement ... condition (see Figure 8)totest the performance of Algorithm 1. The training patch andtesting patch are sized 128×128 and 64×64, respectively. The training patch driving the parametric texture model...
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Báo cáo hóa học: " Research Article New Structured Illumination Technique for the Inspection of High-Reflective Surfaces: Application for the Detection of Structural Defects" doc
... dP,px (in pixel) in the u direction of the image. The ratio of dP,pxwith the period dP,mm (in millimeter) of the pattern LPreflectedgives the image resolution in u direction of the image coordinatesystem.An ... lighting for the inspection taskAs discussed in the introduction, the use of an adapted struc-tured illumination within this work is motivated by the vi-sual inspection process of the human inspector. ... illumination for the inspection of optical lenses.When the variations of the surface to be inspected are morepronounced, an adapted geometry of the illumination facil-itates the recording of the...
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Báo cáo hóa học: " Research Article New Iterative Scheme for Finite Families of Equilibrium, Variational Inequality, and Fixed Point Problems in Banach Spaces" doc
... acceptable. On the other hand, the definition of Dnis of some interest.If Si S for each i 1, 2, ,N1, fi f for each i 1, 2, ,N2and Ai A for eachi 1, 2, ,N3, then Theorem 3.1 ... Fixedpoint theory and Its application.5 S. Reich, “A weak convergence theorem for the alternating method with Bregman distances,” in Theory and Applications of Nonlinear Operators of Accretive ... Point Theory and ApplicationsLet C be a nonempty closed and convex subset of E. The generalized projection Π : E → C isa mapping that assigns to an arbitrary point x ∈ E the minimum point of...
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Báo cáo hóa học: " Research Article New Dilated LMI Characterization for the Multiobjective Full-Order Dynamic Output Feedback " ppt
... uncertainties. Generally, the main feature of these LMI conditions, in their dilated versions, consists in the introduction of an instrumental variable giving asuitable structure, from the synthesis ... LMIs.On the other hand, at the light of the results of Theorem 3.2, a controller which achieves the best global performance level can be obtained through the minimization of the globalobjective functioni,jγH∞,ij ... αmindefined by the two LMIs just in the proof above. In practice, the value of αmincan be easily computed through a simple onedimensional line search procedure over these two LMIs.On the other...
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báo cáo hóa học:" Research Article New Iterative Approximation Methods for a Countable Family of Nonexpansive Mappings in Banach Spaces" pot
... intersection of the fixed point sets of a family of nonexpansive mappings see 5, 6. The problem of findingan optimal point that minimizes a given cost function over the common set of fixed points of a ... →∞.Proof. By the proof of Theorem 4.3 in 1 and applying Lemma 4.6 and Theorem 3.1,weobtain the following result.Theorem 4.7. Let E be a reflexive Banach space which admits a weakly continuous ... arenecessary for the convergence of the iteration scheme 1.11 to a fixed point of T. Furthermore, the modified version of Halpern iteration was investigated widely by many mathematicians.Recently, for the...
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