215 structure of error correcting code for a raid system
The Art of Error Correcting Coding phần 2 pps
... Block diagram of an iterative decoder for a parallel concatenated code Iterative decoding of parallel concatenated codes The basic structure of an iterative decoder for a parallel concatenated coding ... block diagram of an encoder of a parallel concatenated code, better known as a turbo code (Battail 1998; Berrou and Glavieux 1998; Divsalar and Pollara 1995; ITCG 2001) Two encoders are used, each ... number of erasures have been considered Let C be a linear block (N, K, d) code Assume that there is an errors-and-erasures decoder that is capable of decoding any combination of e errors and s erasures...
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Báo cáo Y học: Modeling the three-dimensional structure of H+-ATPase of Neurospora crassa Proposal for a proton pathway from the analysis of internal cavities pptx
... (1994) Computer analysis of bacterial haloacid dehalogenases defines a large superfamily of hydrolases with diverse specificity Application of an iterative approach to database search J Mol Biol ... aspartate (Asp378 in PMA1_NEUCR), several cavities are also seen at the same position in ATC1_RABIT (data not shown) Aside from mutations directed against a small stretch of amino acids adjacent to ... positions of internal polar cavities that are large enough to contain at least one water molecule Analyses of X-ray structures of soluble proteins have indeed shown that such cavities usually harbor...
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fundamentals of error - correcting codes - w cary huffman
... defined and analyzed The nonlinear binary Kerdock and Preparata codes are presented as the Gray image of certain linear codes over Z4 , an amazing connection that explains many of the remarkable properties ... sufficient for a basic understanding of algebraic geometry codes Goppa codes, generalized Reed–Solomon codes, and generalized Reed–Muller codes can be realized as algebraic geometry codes A family of algebraic ... matrix for an [n, k] code C is any k × n matrix G whose rows form a basis for C In general there are many generator matrices for a code For any set of k independent columns of a generator matrix...
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Báo cáo hóa học: " Research Article Comparison of Error Protection Methods for Audio-Video Broadcast over DVB-H" potx
... H.264/AVC A profile consists of a subset of the algorithmic features or coding tools of the standard and a set of constraints on those features A profile is typically targeted for a family of applications ... for each row and concatenated such that the final size of the matrix is of size (N × 255) The (N × 191) part of the matrix is called the application data table (ADT) and the adjacent (N × 64) part ... and the method proposed by Horn et al produce packets in an interleaved manner such that they contain data of all priority classes as well as repair data The packet transmission format therefore...
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Báo cáo hóa học: " On the Design of Error-Correcting Ciphers" docx
... cipher and the concatenated system A against channel-bit -error rate It can be observed that HD cipher and the concatenated system are comparable in terms of error- correction capacity over all the ... shown that a subclass of popular error- correcting codes can be transformed into HD codes by appropriate message transformations Specifically, we have shown that it is possible to convert RS codes ... (also known as integral attack [22] or the saturation attack [23]) makes use of the byte oriented nature of the square block cipher which was the predecessor of Rijndael As Rijndael is also a...
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The Art of Error Correcting Coding phần 1 ppsx
... Hamming spheres, decoding regions and the standard array The standard array is also a convenient way of understanding the concept of Hamming sphere and error correcting capability of a linear ... assumed that the crossover probability (or BSC parameter) p is such that p < 1/2 As shown in Table 1.1 a standard array (Slepian 1956) for a binary linear (n, k, dmin ) code C is a table of all ... centered at v This concept is the ¯ basis of understanding and defining the error correcting capability of a code C The error correcting capability, t, of a code C is the largest radius of Hamming...
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The Art of Error Correcting Coding phần 3 doc
... natural extension of CRC codes are Fire codes These binary cyclic (n, k, d) codes are capable of correcting single error bursts of length b or less and have a generator polynomial of the form ¯ g(x) ... related by equation (3.8), ¯ which is the basis of a syndrome decoder (also referred to as a Meggit decoder (Meggit 1960)) for cyclic codes A related decoder is the error- trapping decoder (Kasami ... abstract algebra.5 Decoding with GF(2m ) arithmetic allows replacement of complex combinatorial circuits with practical processor architectures that can solve Equation (3.8) as a set of linear...
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The Art of Error Correcting Coding phần 4 docx
... solution of errata values For small values of the minimum distance of an RS code, the erasure values may be obtained by solving a set of linear equations Let e(x) be the error polynomial associated ... Subsystem for Satellite (CCSD) standard As a result of the dynamical structure of a convolutional encoder, the state diagram can be represented, as it evolves in time, with a trellis diagram, ... State diagram of a memory-2 rate-1/2 convolutional encoder Example 5.1.2 A state diagram of the memory-2 rate-1/2 convolutional code of Example 5.1.1 is shown in Figure 5.2 The state diagram...
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The Art of Error Correcting Coding phần 5 docx
... Figure 5.23 Encoder of a memory-2 rate-2/3 PC code One of the goals of puncturing is that the same decoder can be used for a variety of high-rate codes One way to achieve decoding of a PC code using ... RCPC codes find applications in automatic repeat request (ARQ) systems because of their incremental redundancy nature, as well as in constructing variable-rate codes and unequal error protection codes ... BINARY CONVOLUTIONAL CODES 103 BMG _ r ACS Traceback RAM Branch metric generator Add, compare and select Update paths and metrics ~ u Figure 5.11 Block diagram of a Viterbi decoder Add, compare...
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The Art of Error Correcting Coding phần 6 pot
... 6.2.8 above is a member of a family of codes known as array codes (see, e.g., (Blaum 1990; Kasahara et al 1976)) Being product codes, array codes are able to correct bursts of errors, in addition ... iterated) codes The main idea is as follows Assume that both C1 and C2 are systematic The codewords of the inner code C1 are arranged as rows of a rectangular array with n1 columns, one per code ... to single errors Array codes have nice trellis structures (Honay and Markarian 1996), and are related to generalized concatenated (GC) codes (Honary et al 1993), which are the topic of Section...
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The Art of Error Correcting Coding phần 7 ppt
... Block diagram of an iterative decoder for a parallel concatenated code Iterative decoding of parallel concatenated codes The basic structure of an iterative decoder for a parallel concatenated coding ... block diagram of an encoder of a parallel concatenated code, better known as a turbo code (Battail 1998; Berrou and Glavieux 1998; Divsalar and Pollara 1995; ITCG 2001) Two encoders are used, each ... number of erasures have been considered Let C be a linear block (N, K, d) code Assume that there is an errors-and-erasures decoder that is capable of decoding any combination of e errors and s erasures...
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The Art of Error Correcting Coding phần 8 pptx
... (2000) 8.2.2 Serial concatenation Serial concatenation of codes was introduced in Benedetto et al (1998) A block diagram of an encoder of a serial concatenation of two linear codes is shown in ... generalized to factor graphs (Forney 2001; Kschischang et al 2001) The nodes of the Tanner graph of a code are associated with two kinds of variables and their LLR values The Tanner graph of a linear ... that, as opposed to a turbo code, in a serially concatenated coding system there is no puncturing of redundant symbols The encoder of a serial concatenation of codes has the same structure as that...
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The Art of Error Correcting Coding phần 9 potx
... are estimated Figure 9.15 is a block diagram of a two-stage decoder of pragmatic TCM In Morelos-Zaragoza and Mogre (2001), a symbol transformation is applied to the input symbols that enables the ... 16-QAM constellation for pragmatic TCM with two-stage decoding 9.3 Multilevel coded modulation The idea in the MCM scheme of Imai and Hirakawa (1977) is to a binary partition of a 2ν -ary modulation ... two-stage decoding, a loss in performance of only 0.2 dB is observed compared with MLD A similar transformation can be applied in the case of M-QAM; the difference is that the transformation is based...
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The Art of Error Correcting Coding phần 10 potx
... Sugiyama, Y Kasahara, S Hirasawa and T Namekawa, A Method for Solving Key Equation for Goppa Codes,” Inf Control, vol 27, pp 87–99, 1975 Y Sugiyama, M Kasahara, S Hirasawa and T Namekawa, “Further ... Algorithm for Linear Block Codes with Algebraic Decoder,” IEEE Trans Inf Theory, vol 40, no 2, pp 320–327, Mar 1994 M Kasahara, Y Sugiyama, S Hirasawa and T Namekawa, A New Class of Binary Codes ... the Basis of BCH Codes,” IEEE Trans Inf Theory, vol IT-21, pp 582–585, 1975 M Kasahara, Y Sugiyama, S Hirasawa and T Namekawa, “New Classes of Binary Codes Constructed on the Basis of Concatenated...
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Simulation hierarchical structure of human visual cortex for image classification
... classes to compare the classification accuracy of HMAX and CQ-HMAX a) Seagrass (Seaweed) where CQ-HMAX significantly outperforms HMAX b) Seafan soft coral, where HMAX has a slightly higher classification ... Motivations Image classification includes a broad range of approaches to the identification of images or parts of them In classification of images, each image is assumed to have a series of features ... Figure 1.3 A pyramid of Gaussian filters are convolved on the images in S1 layer, and a local max is calculated on small neighborhoods in C1 layer A handmade dictionary of features that contains more...
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Structural basis of protein stability at poly extreme crystal structure of amya at 1 6 a resolution 2
... report, partially purified AmyA that contained the signal peptide with a His-tag was used for the activity assay From the crystal structure of AmyA it appears that the His-tag and Nterminal signal ... N-terminal signal peptide cleaved AmyA The primary amino acid sequence of AmyA was analyzed by using the SignalP V 2.0 (Henrik et al, 1997) server and we have found that AmyA has a signal peptide at ... temperature above 60 °C makes AmyA a true halo-thermophilic enzyme 2.1.4 The α-amylases: Alpha-Amylases (alpha-1,4-glucan-4-glucanohydrolase, EC 3.2.1.1) are Endo-acting enzymes that catalyze...
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SIMULATION AND VERIFICATION OF PARTICLE COAGULATION DYNAMICS FOR A PULSED INPUT
... fractal (Jiang and Logan, 1991) The relationship between the mass and the size of a fractal aggregate can be written as m∝lD, where l is the actual length of the aggregate and D is the fractal ... dimension A fractal aggregate with D
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Báo cáo khoa học: Secondary structure of lipidated Ras bound to a lipid bilayer pptx
... (average of three measurements) Truncated Ras 1–166 (average of four measurements) ± ± ± ± 4 aa aa aa aa The secondary structure analysis of membranebound lipidated Ras using the same parameter set, ... concentrators All protein batches were analysed by SDS-PAGE and MALDI-TOF-MS Preparation of the ATR crystal The germanium IRE of the ATR was cleaned chemically with a mixture of chloroform and methanol, ... structure of Ras at the air–water interface was analysed With the largely increased signal-to-noise ratio of ATR-FTIR, we have, for the Discussion As shown in Fig and Table 1, the secondary structures...
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Báo cáo khoa học: Structure of coenzyme F420H2 oxidase (FprA), a di-iron flavoprotein from methanogenic Archaea catalyzing the reduction of O2 to H2O ppt
... only carboxylate groups of glutamates and aspartates are subject to conformational alterations O2-binding site The ligand geometry of the di-iron center in the reduced state offers an attractive ... (2004) Purification and characterization of an H2Oforming NADH oxidase from Clostridium aminovalericum: existence of an oxygen-detoxifying enzyme in an obligate anaerobic bacteria Arch Microbiol ... lm) and O2 as electron acceptor (apparent Km ¼ lm), with an apparent Vmax of the purified enzyme of 180 s)1 [3] Coenzyme F420 is a 5-deazaflavin derivative, and as such transfers hydride anions rather...
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- performance comparison of geocast routing protocols for a manet
- oxford dictionary of english activation code for android
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