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Дисертації з теми "Multilevel codes"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Schill, Dietmar [Verfasser]. "Hierarchical Broadcasting using Multilevel Codes : Hierarchischer Rundfunk mittels Multilevel Codes / Dietmar Schill." Aachen : Shaker, 2003. http://d-nb.info/1172611688/34.

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2

Martin, Philippa Anne. "Adaptive iterative decoding : block turbo codes and multilevel codes." Thesis, University of Canterbury. Electrical and Electronic Engineering, 2001. http://hdl.handle.net/10092/7853.

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New adaptive, iterative approaches to the decoding of block Turbo codes and multilevel codes are developed. Block Turbo codes are considered as they can readily provide high data rates, low decoding complexity and good performance. Multilevel codes are considered as they provide a moderate complexity approach to a high complexity code and can provide codes with good bandwidth efficiency. The work develops two adaptive sub-optimal soft output decoding algorithms for block Turbo codes. One is based on approximation and the other on the distance properties of the component codes. They can be use

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3

Baghaie, Abchuyeh Marjan. "Multilevel Space-Time Trellis Codes for Rayleigh Fading Channels." Thesis, University of Canterbury. Electrical and Computer Engineering, 2008. http://hdl.handle.net/10092/2101.

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Demand for capacity in wireless communication systems has been rapidly growing world- wide. This has been driven by increasing data rate requirements of cellular mobile systems, and demand for wireless Internet and multimedia services. As the available radio spec- trum is limited, higher data rates can only be achieved by designing more efficient signaling techniques. In this thesis, we propose a new transmission scheme, which benefits from the advantages of conventional space-time trellis codes (CSTTCs) but does not have the disadvantages, especially for larger signal constellations. We achie

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4

Belgrade, Diana Stojanovic. "Interative multistage maximum likelihood decoding algorithm for multilevel codes and its applications." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6876.

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The role of channel coding in digital communication system is to provide reliability, that is, a successful information transmission in the presence of noise and interference, with as small an error rate as required. Half a century of research in Information Theory and Communications resulted in construction of many good codes and classes of codes. In general, longer codes achieve better performance, but the required time, memory, and amount of computation needed for successful decoding of these codes may in practice be infeasible. Thus the search for an efficient decoding algorithm is as impo

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5

Licona-Nunez, Jorge Estuardo. "M-ary Runlength Limited Coding and Signal Processing for Optical Data Storage." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5195.

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Recent attempts to increase the capacity of the compact disc (CD) and digital versatile disc (DVD) have explored the use of multilevel recording instead of binary recording. Systems that achieve an increase in capacity of about three times that of conventional CD have been proposed for production. Marks in these systems are multilevel and fixed-length as opposed to binary and variable length in CD and DVD. The main objective of this work is to evaluate the performance of multilevel ($M$-ary) runlength-limited (RLL) coded sequences in optical data storage. First, the waterfilling capacity of

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6

Vargas, Barroso Aharón Jesús [Verfasser], and Wolfgang [Akademischer Betreuer] Gerstacker. "Design and Implementation Aspects of Multilevel Codes in Hierarchical Broadcasting Communications / Aharón Jesús Vargas Barroso. Betreuer: Wolfgang Gerstacker." Erlangen : Universitätsbibliothek der Universität Erlangen-Nürnberg, 2011. http://d-nb.info/1016569092/34.

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7

Minkov, Lyubomir L. "EXPERIMENTAL DEMONSTRATION OF MITIGATION OF LINEAR AND NONLINEAR IMPAIRMENTS IN FIBER-OPTIC COMMUNICATION SYSTEMS BY LDPC-CODED TURBO EQUALIZATION." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194082.

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The ever-increasing demands for transmission capacity are the cause for the quick evolution of optical communication systems. Channel transmission at 100 Gb/s is already being considered by network operators. The major transmission impairments at these high rates are intra-channel and inter-channel nonlinearities, nonlinear phase noise, and polarization mode dispersion. By implementing LDPC-coded modulation schemes with soft decoding and Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm for equalization we have demonstrated significant improvements in system performance experiencing several impairment

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8

Onanchenko, Yevhen Leonidovych, Евгений Леонидович Онанченко, Євген Леонідович Онанченко та Р. А. Ткаченко. "Построение многоуровневых кодов при адаптивной передаче сигналов". Thesis, Изд-во СумДУ, 2008. http://essuir.sumdu.edu.ua/handle/123456789/4224.

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9

Alfaro, Zavala Juan Wilfredo. "Improving Error Performance in Bandwidth-Limited Baseband Channels." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-12745.

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Channel coding has been largely used for the purpose of improving error performance on a communications system. Typical methods based on added redundancy allow for error detection and correction, this improvement however comes at a cost of bandwidth. This thesis focuses on channel coding for the bandwidth-limited channel where no bandwidth expansion is allowed. We first discuss the idea of coding for the bandwidth-limited channel as seen from the signal space point of view where the purpose of coding is to maximize the Euclidian distance between constellation points without increasing the tota

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10

Danjean, Ludovic. "Algorithmes itératifs à faible complexité pour le codage de canal et le compressed sensing." Phd thesis, Université de Cergy Pontoise, 2012. http://tel.archives-ouvertes.fr/tel-00797447.

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L'utilisation d'algorithmes itératifs est aujourd'hui largement répandue dans tous les domaines du traitement du signal et des communications numériques. Dans les systèmes de communications modernes, les algorithmes itératifs sont utilisés dans le décodage des codes ''low-density parity-check'' (LDPC), qui sont une classe de codes correcteurs d'erreurs utilisés pour leurs performances exceptionnelles en terme de taux d'erreur. Dans un domaine plus récent qu'est le ''compressed sensing'', les algorithmes itératifs sont utilisés comme méthode de reconstruction afin de recouvrer un signal ''spars

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11

Wang, Yi. "Iterative decoding of multilevel coded modulation." Thesis, University of York, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.550288.

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Анотація:

Multilevel coded modulation, initially proposed by Imai and Hirakawa in 1977, is a powerful bandwidth efficient coded modulation technique, where different-rate codes are employed to protect each level of the mapping. Later, multilevel coded modulation in conjunction with iter- ative decoding (MLCM-ID) was developed by Isaka and Imai in 2001, in order to significantly compensate the suboptimality of the non-iteration multi stage decoding. MLCM-ID is regarded as an attractive technique since it can operate as well as overall maximum likelihood decoding in the range of target BER with low-comple

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12

Tee, Ronald Yee Siong. "Iterative decoding of multilevel and bit-interleaved coded modulation." Thesis, University of Southampton, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485435.

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A comparative study of various codeq. modulation schemes is carried out in terms of their different block length, number of iterations and complexity, quantified by the number of trellis states as well as the EXtrinsic Information Transfer (EXIT) charts are used for analysing their decoding convergence and Bit Error Ratio (BER). A threeDimensional (3-D) EXIT chart is introduced for MultiLevel Coding (MLC) invoking MultiStage Decoding (MSD). Based on this 3-D EXIT chart, we design a precodedMLC scheme employing both MSD and Parallel Independent Decoding (PID). In order to provide space diversit

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13

Guedes, Henrique Lenon Farias. "Comércio e conflito: a privatização da segurança internacional e a regulação multinível do mercado de empresas militares privadas." Universidade Federal da Paraíba, 2016. http://tede.biblioteca.ufpb.br:8080/handle/tede/9643.

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Submitted by ANA KARLA PEREIRA RODRIGUES (anakarla_@hotmail.com) on 2017-09-29T13:49:28Z No. of bitstreams: 1 arquivototal.pdf: 1490911 bytes, checksum: 8dfe7fdde29c102ab866fdfcd65627d0 (MD5)<br>Made available in DSpace on 2017-09-29T13:49:28Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1490911 bytes, checksum: 8dfe7fdde29c102ab866fdfcd65627d0 (MD5) Previous issue date: 2016-05-02<br>Hiring private armies or private security forces for a specific action, in favor of governments, corporations or civil society organizations – as opposed to the public formalities of war declaration between St

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14

Li, Chang-Hong, and 李昌鴻. "Product Coded Multilevel Codes." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/53uu97.

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碩士<br>國立臺北科技大學<br>電機工程系<br>106<br>Product codes and Multilevel Coset codes are powerful coding techniques for constructing long codes from existing short codes. In this thesis, we proposed a Multilevel Coset coding scheme. The multilevel component codes which are constructed from Reed-Solomon codes and short block codes. Since we use a multistage decoding algorithm, the decoding complexity is reasonable. The simulation results show that our proposed schemes have significant coding gains.

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15

CHANG, CHING-YEN, and 張淨嚴. "Multilevel Product-Coded Space-Time Block Codes." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p34e56.

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碩士<br>國立臺北科技大學<br>電機工程系<br>107<br>Nowadays, the communication system is required to have high performance, high stability and high reliability. In this thesis, we use space-time block codes in the wireless communication system. An expanded QPSK signal set is partitioned into five levels. Then, multilevel product codes are used as the component codes. Simulation results are performed to verify the error performance.

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16

Haung, Chang-Chih, and 黃彰智. "Multilevel Space-time Codes." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/65050920179400460539.

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碩士<br>國立中央大學<br>電機工程研究所<br>90<br>This thesis is aimed at space-time trellis coding, using multilevel coding technology to decrease complexity. Chapter 3 focuses on full diversity space-time codes, using a code in [4] to design a space-time block code which has three transmission antennas. We try to change signal labeling and calculate　determinant in order to research error performance and transform this structure to a type of space-time trellis codes. Try to find a design method to construct space-time trellis codes instead of delay diversity scheme. Chapter 4 focuses on non-full diversit

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17

Peng, Chi-Ting, and 彭及廷. "Hierarchical Binary Multilevel Coset Codes." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/4p3rnf.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>101<br>With the multilevel coding, long block code can be combined by many short codes, and then decreasing the decoding complexity. It still has a problem with higher complexity, if the length of original block code is too long to make the combined codes short in the multilevel coding structure. Therefore, this thesis proposes a method to decrease the arithmetic complexity of a multilevel coding system with adding multilevel coding into each layer of the original system. The simulations show that the proposed way gives a lower complexity of the original system wi

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18

Botha, Louis. "Multilevel sequences and line codes." Thesis, 2014. http://hdl.handle.net/10210/10623.

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M.Ing. (Electrical Engineering)<br>As the demand for high-speed data communications over conventional channels such as coaxial cables and twisted pairs grows, it becomes neccesary to optimize every aspect of the communication system at reasonable cost to meet this demand effectively. The choice of a line code is one of the most important aspects in the design of a communications system, as the line code determines the complexity, and thus also the cost, of several circuits in the system. It has become known in recent years that a multilevel line code is preferable to a binary code in cases whe

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19

Chou, Feng-Chih, and 周逢智. "Multilevel Space-Time Block Codes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/30570619539849096824.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>The multipath wireless channel suffers severe attenuation. The effective techniques to mitigate multipath fading are time and frequency diversity. In most situations, the wireless channel is slow varying and frequency non-selective. Hence, antenna diversity is a practical technique for reducing the effect of multipath fading. Multiple input multiple output wireless channels can introduce spatial diversity and increased information capacity. These results have motivated a new area in error correcting codes. Space-time codeing(STC) schemes combine the channel code

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20

Su, Chi-Chin, and 蘇麒秦. "Multilevel Concatenated Punctured Convolutional Codes." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/36e563.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>97<br>We propose a novel design of multilevel coset codes. We use a low-rate convolutional code as a mother code, and generate some high-rate punctured convolutional codes from the mother code. By using these punctured convolutional codes as ther outer codes, a single Viterbi decoder of ther mother code is needed to perform the multistage decoding. The inner codes are constructed based on set partitioning of a binary linear block code. The simulation results show that the proposed coding scheme outperforms the original mother code.

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21

Chou, Hong Yu, and 周弘育. "RS-Concatenated Multilevel Space-Time Codes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/xw2zyc.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>98<br>Over past several years, transmit diversity has been studied extensively to provide error performance for wireless systems. A novel technique for constructing multilevel space-time code is proposed. For a given orthogonal space-time block code, several component codes are combined in conjunction with set partitioning of the multidimensional signal constellation according to the coding gain distance criterion. Then, the associated scheme is further concatenated with an outer Reed-Solomon code. Simulation results show that the concatenated scheme can achieve e

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22

Chen, I.-Ting, and 陳羿廷. "Super-Orthogonal Multilevel Space-Time Codes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/34874335206348527594.

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碩士<br>中原大學<br>電機工程研究所<br>96<br>In wireless communication environments, the reliability of received signals degrade seriously at the receiver because of the effects of fading channels and signals jamming by each other. In order to reduce the influence of fading channel that cause by signal transmission. Foschini,Gans and Telatar proved that multiple input multiple output can introduce spatial diversity and increase information capacity. These results have motivated a new area in error correcting codes. Space-Time Coding (STC) schemes combine the channel code design and the use of multiple trans

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23

Yang, Hong-Jheng, and 楊鴻正. "Concatenation of RS codes and Interlevel-correlated Multilevel Coset Codes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/4krhyg.

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碩士<br>國立臺北科技大學<br>電機工程系所<br>98<br>The multilevel coding technique is a powerful method for constructing coding schemes from component codes in conjunction with set partitioning of coset code. The concatenated coding can construct long block codes from short component codes. In this thesis, an Reed-Solomon(RS)-concatenated multilevel coding scheme is proposed. By concatenating an outer Reed-Solomon code with an inner interlevel-correlated multilevel coset codes , the concatenated coding scheme can achieve large coding gain and low decoding complexity. Simulation results show that the proposed c

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24

Lo, Hsu-Chieh, and 羅旭傑. "Binary Multilevel Coset Codes with Low Complexity." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/d3gaw8.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>97<br>The multilevel coding technique is a powerful method for constructing coded modulation schemes from component codes in conjunction with set partitioning of a signal constellation. In this thesis, a twofold multilevel concatenated coding scheme is proposed. The multilevel coding structure is based on set partitioning of an expanded set of interlevel-correlated multilevel coset codes. By concatenating several outer codes and an expanded set of the interlevel-correlated multilevel coset code, the proposed coding scheme can achieve large coding gain while the de

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25

Lin, Chia-Hao, and 林嘉豪. "Concatenation of RS Codes and Multilevel Space-Time Codes with Interlevel Coding." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/5heqts.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>99<br>Recently, the concept of joint design of time diversity and space diversity has been widely used in wireless communication system. Such that the bit error rates can be improved greatly. During the transmission, the MIMO system can resist the channel attenuation and increase the transmission capacity by providing space diversity. In this thesis, we propose a new space-time coding scheme in which considerable coding gain can be achieved. For a given orthogonal space-time block code, the multilevel space-time coding scheme is designed by combining several c

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26

Chien, Hung-Ta, and 簡宏達. "Hierarchical Binary Multilevel Coset Codes with Interblock Memory." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/a65bwj.

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碩士<br>國立臺北科技大學<br>電機工程系所<br>102<br>By using the multilevel coset coding scheme, a long code can be constructed from several short codes in conjunction with coset codes so that the tellis complexity can be decreased. In this thesis, we propose a modified hierarchical binary multilevel coset coding scheme. The outer codes of the original multilevel coset coding scheme are also designed by using the multilevel coding to further reduce the trellis complexity. Moreover, interblock memory between adjacent blocks is added to increase the coding rate without decreasing the minimum Hamming distance. Th

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27

CHEN, YU-TING, and 陳宥廷. "VLSI Design of LDPC Codes for Multilevel Flash Memories." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/33741615905880303008.

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碩士<br>國立臺北大學<br>通訊工程研究所<br>98<br>Recently, flash memories with reduced cell sizes are popular in applications such that issues like disturbs and data retention become critical. Hence, the reliability of memories has decreased. In order to increase the reliability of memories, error-control coding has been suggested to correct errors during memory reading. There are already some researches of the hardware design of error correcting codes in storage equipments. BCH and RS codes are the most powerful known algebraic codes and are widely used. In very recent years, low-density parity-check (LDPC)

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28

Tsai, Chia-Hung, and 蔡嘉紘. "BCH Coded Multilevel Space-Time Block Codes with Three Time Slots and Two Transmit Antennas." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/y94yxw.

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碩士<br>國立臺北科技大學<br>電機工程研究所<br>105<br>In digital transmission, the technical of error control coding can improve the error rate. In recent years, multiple-input multiple output (MIMO) schemes can be used to over the problem of multipath fading in wireless communication environments. In this thesis, we proposed a multilevel space-time block code with two transmit antennas and three time slots which can be applied to LTE-A frame structure. A transmission system which can achieve high transmission rate requirements in the MIMO. This new structure is designed by multilevel space-time block code and

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29

PADOVANI, ROBERTO. "SIGNAL SPACE CHANNEL CODING: CODES FOR MULTILEVEL/PHASE/FREQUENCY SIGNALS." 1985. https://scholarworks.umass.edu/dissertations/AAI8509586.

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Channel coding combined with expanded signal sets has been shown to improve error performance over uncoded modulation without expanding the bandwidth of the transmitted signals. Remarkable coding gains are obtainable by combining rate R(,c) = m/(m+1) convolutional encoders with 2('m+1)-point signal constellations, for transmission of m bits of information per modulation interval. The redundancy introduced in the signal space can be effectively exploited by a maximum-likelihood decoder (Viterbi decoder) to improve error performance as compared with uncoded transmission of the same information.

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30

Hung, Yu-Jen, and 洪佑仁. "Efficient Decoding of Error Control Codes for Multilevel Flash Memories." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/72882000877796885555.

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碩士<br>國立臺北大學<br>通訊工程研究所<br>95<br>In recent years, new-generation Flash memories have reduced cell size such that issues like disturbs and data retention become more and more critical. Consequently, the reliability of memories has decreased. In order to increase the reliability of memories, error control coding has been suggested to correct errors during memory reading. There are already some researches of the hardware design of error correcting codes in storage equipments. BCH and RS codes form the core of the most powerful known algebraic codes and are widely used .In this thesis, we focus on

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31

Wang, Hsin-Wen, and 王信文. "Multilevel Coding Technique Based on Set Partitioning of Block Modulation Codes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/69816743694924359297.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>Block-coded modulation codes are generally constructed from Hamming distance block component codes by using the multilevel coding method proposed by Imai and Hirakawa. The multilevel coding method is a powerful technique for constructing BCM (or TCM)codes systematically with arbitrarily large distance parameters for AWGN channels. The multilevel structure of the multilevel BCM codes allows the use of multistage decoding procedures the provide good tradeoff between error performance and decoding complexity. In this thesis ,we generalize the concept of set partitio

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32

Kuo, Yueh-Chia, and 郭岳嘉. "Application of Quasi-Cyclic Low-Density Parity-Check Codes to Multilevel Coding." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/01435460104329256574.

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碩士<br>國立清華大學<br>通訊工程研究所<br>93<br>Multilevel coding (MLC) is a well-known coded modulation scheme proposed to achieve both power and bandwidth eciency. Multistage decoding (MSD) and parallel independent (PID) decoding are two decoding methods proposed for the MLC scheme. Since PID is a suboptimal but more eective decoding strategy than MSD, we consider the MLC/PID scheme here. Any codes, e.g., block codes, convolutional codes, or concatenated codes, can be used as the component codes in the MLC scheme. In this thesis, we use the quasi-cyclic low-density parity-check (QC-LDPC) codes as the compo

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33

Stojanović, Diana. "Iterative multistage maximum likelihood decoding algorithm for multilevel codes and its applications." 2003. http://proquest.umi.com/pqdweb?index=0&did=764805071&SrchMode=1&sid=6&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1233278975&clientId=23440.

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Lo, Jastina, and 羅櫻心. "Using Viterbi Decoders in FH-CDMA Wireless Systems Based on Multilevel Prime Codes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/75758826238862842402.

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碩士<br>國立中興大學<br>電機工程學系所<br>100<br>The innovations and applications of wireless communication technologies lead to recent rapid developments in the mobile communication and wireless networks. Frequency-hopping code-division multiple-access (FH-CDMA) systems have been widely studied and known to be effective means of communications in combating multipath fading because of their inherent frequency diversity. By assigning different FH codes to different users, FH-CDMA systems can allow simultaneous users utilize the same frequency band to send their data at the same time. Coded modulation is a tec

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Chen, Chia-Hsu, and 陳嘉序. "Multilevel Coded Spatial Modulation." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/r894h3.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>100<br>Nowadays, multiple-input multiple output (MIMO) transmission techniques are very popular for wireless communication system. The main idea of MIMO is spanning spatial diversity to enhance system performance. Space-time block code (STBC) applies the general MIMO concept, using multiple transmit and receive antennas to construct. If we combine spatial modulation (SM) technique with it, we can increase its spatial diversity. In this paper, we propose a new coding scheme which integrates the ideas of both multilevel coding (MLC) and space-time block coded spatia

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Huang, Tsu-Chi, and 黃子驥. "Multilevel Coded Modulations for Noncoherent Decoding." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/39973970848756745986.

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碩士<br>國立中央大學<br>通訊工程研究所<br>90<br>This thesis constructs a multilevel Coded modulation for noncoherent decoding based on MPSK. This coded modulation using nocoherent decoding is more approaching to the error performance of coherent than differential multilevel coded modulation using nocoherent decoding. At last, we use the same mode to constructing a multilevel coded modulation for noncoherent decoding based on 16QAM, and it can have a good error performance, too.

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Lin, Hui-Mei, and 林慧美. "Multilevel Turbo Product Coded Modulation Technique." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/487vkr.

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碩士<br>中原大學<br>電機工程研究所<br>93<br>The main idea of this thesis was doing research of the product code which used iterative decoding method of the turbo code and block coded modulation (BCM) system. BCM was combined with coding and modulation technique that achieves significant coding gain without bandwidth expansion. The most powerful method for constructing BCM codes were the multilevel decoding technique. Turbo code has good performance, but it can’t achieve better in high signal to noise rate (Eb/No) called ‘Error floor’. The maximum a posteriori (MAP) algorithm was used by turbo code, but it

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Yang, Yi-Fan, and 楊逸帆. "Multilevel Coded Modulation with Interblock Memory." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/7gq969.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>96<br>The coded modulation technique combines error-control coding and the concept of set partition on the expanded two-dimension signal set to achieve appreciable coding gains without sacrificing the bandwidth. In this thesis, we propose a new multilevel coded modulation scheme. The proposed construction is based on set partitioning of block-coded modulation with interblock memory. In comparison with the traditional scheme, the proposed scheme can achieve similar error performance with reduced decoding complexity

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Yeh, Chia-Jung, and 葉加榮. "Further Study on Multilevel Turbo Coded Modulation Using a Delay Processor." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/81382452969149928898.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>88<br>In this thesis, we propose a Turbo coded modulation scheme, the proposed coding strategy is first based on multilevel codes with interdependency between consecutive levels of a given labeling and is modified from a Turbo coded modulation [15] proposed in 1999. With m-level partition structure, we combine the first (m-1) consecutive levels as a single Turbo code, the m-th level is encoded as a BCH code. The resultant coded sequence is then sequentially processed by the multiplexer, the multilevel delay processor and the signal mapper. With proper choices of th

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Lin, Hung-Ming, and 林宏明. "A Method of Correcting the Shift Error of Multilevel Flash Memory by the Skill of Gray Code." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/02734713967112399244.

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碩士<br>中興大學<br>資訊科學系所<br>95<br>In new-generation Flash memories, in order to economize the use of density of a cell that certainly will decrease the reliability of device. Thus, it is very important that how to maintain and improve the reliability of device in multilevel flash. In this work, we propose a new scheme of gray coding to reduce error bits caused by shift level in multilevel flash. Furthermore, the proposed scheme also can effectively enhance the reliability of multilevel flash. In our experiment results, gray coding method can limit the error bits caused by shift level in a scope, a

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Ching, Yang-ya, and 楊雅晴. "A Multilevel Analysis of the Relationship between High Performance Work System and Managers’ Ambidexterity Mediated by Shared Language and Code and Absorptive Capacity." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/06239675201025576924.

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碩士<br>國立臺灣科技大學<br>企業管理系<br>102<br>The purpose of this study is to explore the impact mechanism between High Performance Work System (HPWS) and Manager’s Ambidexterity (MA) through cross-level analyses. Share Language and Code and Absorptive Capacity (AC) were chosen as the mediators. In this study, two versions of questionnaires were used: manager version and non-manager version. Data collected from multiple resources involving 184 managers and 346 non-managers belonging to 33 companies and 79 units. Using Hierarchical Linear Models (HLM) for data analyses, the result indicated that: share la

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Kumar, Neeraj. "Finite Element Method based Model Order Reduction for Electromagnetics." Thesis, 2016. https://etd.iisc.ac.in/handle/2005/4926.

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Model order reduction (MOR) refers to the process of reducing the size of large scale discrete systems with the goal of capturing their behavior in a small and tractable model known as the reduced order model (ROM). ROMs are invariably constructed by projecting the original system onto a low rank subspace that captures the physics for specified range/s of parameter/s. The parameters, say for electromagnetic scattering, can be the frequency of excitation, angle of incidence, and/or material parameters. Thus, ROMs enable fast parameter sweep analysis and quick prototyping. Historically, a major

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VEITHOVÁ, Monika. "Etika a ekonomie v průběhu dějin ekonomického myšlení." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-200817.

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The aim of this thesis is to find and describe the relationship between ethics and economics in terms of their separation and return in the history of economic thought. For a comprehensive entry at first basic terms and the most important milestones of economic thought throughout history are explained. The diploma work shows, within the historical framework, the most important trends of thinking of particular economic schools and through proven propositions it either affirms or denies them.

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