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Dissertations / Theses on the topic 'Channel coding system'

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Published: 28 May 2022

Last updated: 30 July 2025

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1

Mior, Alessandra. "Channel estimation and coding for improved performance in wireless system." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425659.

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Two of the most important issues in wireless systems are addressed: channel estimation and channel coding. The frequency domain channel estimation techniques are used to estimate the channel in a WiMAX system (standard IEEE 802.16e). In the same system, Low-Density Parity-Check (LDPC) codes are proposed and perform quite well. In this thesis decoding techniques for these codes are studied: a modification to the Message Passing Algorithm (MPA) is proposed in order to reduce the number of multiplications. Then two alternative decoding methods for LDPC codes are explored: the Priority First Searc

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2

Davey, Paul James. "Channel coding techniques for a multiple track digital magnetic recording system." Thesis, University of Plymouth, 1994. http://hdl.handle.net/10026.1/2627.

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In magnetic recording greater area) bit packing densities are achieved through increasing track density by reducing space between and width of the recording tracks, and/or reducing the wavelength of the recorded information. This leads to the requirement of higher precision tape transport mechanisms and dedicated coding circuitry. A TMS320 10 digital signal processor is applied to a standard low-cost, low precision, multiple-track, compact cassette tape recording system. Advanced signal processing and coding techniques are employed to maximise recording density and to compensate for the mechan

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3

Camargo, Alfonso. "Adaptive modulation, channel coding and MIMO schemes for practical OFDM systems." Aachen Shaker, 2009. http://d-nb.info/99482971X/04.

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4

Jagiello, Kristin, Mahmut Zafer Aydin, and Wei-Ren Ng. "Joint JPEG2000/LDPC Code System Design for Image Telemetry." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606217.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California<br>This paper considers the joint selection of the source code rate and channel code rate in an image telemetry system. Specifically considered is the JPEG2000 image coder and an LDPC code family. The goal is to determine the optimum apportioning of bits between the source and channel codes for a given channel signal-to-noise ratio and total bit rate, R(total). Optimality is in the

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5

Raad, Ibrahim Samir. "Study of turbo codes across space time spreading channel." School of Electrical, Computer and Telecommunications Engineering - Faculty of Informatics, 2004. http://ro.uow.edu.au/theses/269.

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This thesis deals with an application of turbo codes across Space Time Spreading Channel. This is done by undertaking a study into the extent to which these error correction codes can reduce the bit error rate across the space time spreading channel. Both the turbo codes and space time channel have been developed in Matlab�s Simulink. The thesis starts with an introduction to turbo codes which is presented on the basis of classical turbo codes introduced by Berrou et al in 1993 (Berrou et al., 1993). This is illustrated by some examples of their performance across the Additive White Gaussian N

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6

Han, Yang. "LDPC Coding for Magnetic Storage: Low Floor Decoding Algorithms, System Design and Performance Analysis." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195972.

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Low-density parity check (LDPC) codes have experienced tremendous popularity due to their capacity-achieving performance. In this dissertation, several different aspects of LDPC coding and its applications to magnetic storage are investigated. One of the most significant issues that impedes the use of LDPC codes in many systems is the error-rate floor phenomenon associated with their iterative decoders. By delineating the fundamental principles, we extend to partial response channels algorithms for predicting the error rate performance in the floor region for the binary-input AWGN channel. We

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7

姍, 路., and Shan Lu. "Coding and decoding for multiuser communication systems." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12863897/?lang=0, 2014. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12863897/?lang=0.

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本論文は、多端子通信路に対するマルチユーザ符号化および復号の研究成果をまとめたものである。多重接続加算通信路による情報伝送において、複数ユーザの稼働状態を識別するための誤り訂正可能なシグネチャ符号の構成を論ず,全伝送率の高いシグネチャ符号の一般的な構成法を解明する.双方向中継通信路では、2ユーザターボ符号に対する復号の演算量を低減させる復号法を提案する。加法性白色ガウス雑音環境下では復号性能を劣化することなく、レイリーフェージング環境下では僅かな劣化にとどめながら、復号の演算量を約半分程度に低減することができる.<br>Coding and decoding for multiuser communication systems are investigated. For MAAC, we propose a coding scheme of (k + 1)-ary error-correcting signature codes. We give binary and non-binary signature codes. They are the best error-correcting signature codes for MAAC, in the sense that they have highest sum rates known. For TWRC, we pro

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8

Кісельов, Д. О. "Система канального кодування для високошвидкісних локальних мереж". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75681.

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Пояснювальна записка: 81 сторінка, 36 рисунків,7 таблиць, 17 джерел. Графічні матеріали: 1 схема алгоритму, 1 схема електрична структурна, 1 схема електрична функціанальна, 1 схема електрична принципова. У першому спеціальному розділі описується актуальність роботи, наводяться результати науково-дослідної роботи,і на основі отриманих даних проектується система канального кодування для високошвидкісних локальних мереж. У другому розділі описується економічна частина.

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9

Takele, Berta. "Performance Evaluation of Simple Space-Time Block Coding on MIMO Communication System." Thesis, Växjö University, Växjö University, School of Mathematics and Systems Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-6988.

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<p>This thesis discuss on new technique called space time block coding (especially Alamouti's code) which is used to increase capacity and reliability of data transmission over time varying multi-path fading channel. The over all work of the thesis included in the following four chapters.</p><p>In chapter-1 we are going to cover some theoretical part which is useful to understand thesis work and in chapter-2 we will discuss the comparison between simple space time block code (Alamouti's code) and MRRC (Maximum Ratio Receiver Combining) which is receiver diversity and then in chapter-3 we will

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10

Yuksekkaya, Mehmet. "Implementation And Performance Analysis Of The Dvb-t Standard System." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606904/index.pdf.

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Terrestrial Digital Video Broadcasting (DVB-T) is a standard for wireless broadcast of MPEG-2 video. DVB-T is based on channel coding algorithms and uses Orthogonal Frequency Division Multiplexing (OFDM) as a modulation scheme. In this thesis, we have implemented the standard of ETSI EN 300 744 for Digital Video Broadcasting in MATLAB. This system is composed of the certain blocks which include OFDM modulation, channel estimation, channel equalization, frame synchronization, error-protection coding, to name a few of such blocks. We have investigated the performance of the complete system for

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11

AraÃjo, Gilderlan Tavares de. "MÃtodos Tensoriais para EstimaÃÃo de Canal em Sistemas MIMO-STBC." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11600.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>In this work, the performance of MIMO systems based on space-time coding is investigated through multilinear algebra, more speciﬁcally, by means of tensor decompositions, pulling away a bit from commonly used matrix models. We assume a system composed of P transmit and M receive antennas, consisting of a combination of a space-time block code (STBC) with a formatting ﬁlter. This ﬁlter is formed by a precoding matrix and a matrix that maps the precoded signal onto the transmit antennas. For the consid

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12

Tedesso, Thomas W. "Performance analysis of a SFH/NCBFSK communication system with rate 1/2 convolutional coding and soft decision Viterbi detection over a Ricean fading channel with partial-band noise jamming." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA345047.

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Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, March 1998.<br>Thesis advisor(s): R. Clark Robertson. "March 1998." Includes bibliographical references (p. 67-68). Also available online.

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13

Hanekom, J. J. (Johannes Jurgens). "Models and psychophysics of acoustic and electric hearing." Thesis, University of Pretoria, 2001. http://hdl.handle.net/2263/24846.

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Especially important in developing improved cochlear implants is to develop a deeper understanding of the processing of sound in the central auditory nervous system, for both acoustic and electrical stimulation of the auditory system. This thesis contributes to this objective through cochlear implant psychoacoustic research and modelling of auditory system sound processing. The primary hypothesis of the thesis was that the same underlying mechanisms are responsible for sound perception in both electric and acoustic hearing. Thus, if appropriate models are created for normal acoustic hearing, t

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14

Franklin, Daniel Robert. "Enhancements to channel models, DMT modulation and coding for channels subject to impulsive noise." School of Electrical, Computer & Telecommunications Engineering - Faculty of Informatics, 2007. http://ro.uow.edu.au/theses/18.

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DMT modulation is an OFDM-based modulation scheme used in ADSL and proposed for various other high-speed broadband access systems. Existing mathematical models for transmission lines make a number of simplistic assumptions about the distribution of noise, in particular, the assumption that impulsive noise originates at either end of the transmission line. It is therefore desirable to improve the accuracy of the transmission-line model to allow better prediction of broadband modem performance, and to further improve the bit-allocation algorithms and equaliser designs used in DMT-based modems. T

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15

Lund, David J. "Reconfigurable channel coding for future communication systems." Thesis, Lancaster University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289042.

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16

Zajic, Alenka. "Space-time channel modeling, simulation, and coding." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26569.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Stuber,Gordon L.; Committee Member: Durgin, Gregory D.; Committee Member: Kim, Hyesoon; Committee Member: Li, Ye (Geoffrey); Committee Member: McLaughlin, Steven W.; Committee Member: Riley, George F.. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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17

Wang, Xufang. "Multiresolution joint source and channel coding for wireless communications /." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B23340113.

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18

Kim, Moo Yound. "Source and Channel Coding for Audiovisual Communication Systems." Doctoral thesis, KTH, Signals, Sensors and Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-57.

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<p>Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. This thesis consists of four topics.</p><p>Firstly, based on high-rate theory, we propose Karhunen-Loéve transform (KLT)-based classified vector quantization (VQ) to efficiently utilize optimal VQ advantages over scalar quantization (SQ). Compared

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Kim, Moo Young. "Source and Channel Coding for Audiovisual Communication Systems." Doctoral thesis, KTH, Signaler, sensorer och system, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-57.

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Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. This thesis consists of four topics. Firstly, based on high-rate theory, we propose Karhunen-Loéve transform (KLT)-based classified vector quantization (VQ) to efficiently utilize optimal VQ advantages over scalar quantization (SQ). Compared with cod

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20

王徐芳 and Xufang Wang. "Multiresolution joint source and channel coding for wireless communications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31225299.

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21

Aramvith, Supavadee. "Video coding for transport over wireless channels /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5853.

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22

Lau, Vincent K. N. "Variable rate adaptive channel coding in mobile cellular systems." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/272152.

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23

Zhao, Qinghua. "Bandwidth allocation and tradeoffs of source coding, channel coding and spreading in CDMA systems /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3137223.

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24

Lamahewa, Tharaka Anuradha. "Space-time coding and space-time channel modelling for wireless communications /." View thesis entry in Australian Digital Theses Program, 2006. http://thesis.anu.edu.au/public/adt-ANU20070816.152647/index.html.

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25

Baker, Dirk A. "Space-time block coding with imperfect channel estimates." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1843.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains iv, 74 p. : ill. Includes abstract. Includes bibliographical references (p. 73-74).

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26

Cameron, Rick. "Performance analysis of CDMA systems in multipath channels." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-10312009-020344/.

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27

Hadi, Ammar. "Optimisation and analysis of polar codes in communication systems." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/optimisation-and-analysis-of-polar-codes-in-communication-systems(eb4cfc8a-86b5-465c-9231-4e02a3c2723c).html.

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Polar codes were invented as the first error-correcting codes to achieve the capacity for the discrete channels with relatively low-complexity for encoding and decoding. However, this is only possible with significantly large code lengths which are not practical for many systems. Meanwhile, the performance of the finite-lengths polar codes is not competitive with other modern error-correcting codes. This can be attributed to the suboptimality of the decoding process and the relatively poor minimum Hamming distances. This thesis aims to improve the performance of polar codes. The contributions

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Xu, Ning. "Physical-Layer Network Coding for MIMO Systems." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc68065/.

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The future wireless communication systems are required to meet the growing demands of reliability, bandwidth capacity, and mobility. However, as corruptions such as fading effects, thermal noise, are present in the channel, the occurrence of errors is unavoidable. Motivated by this, the work in this dissertation attempts to improve the system performance by way of exploiting schemes which statistically reduce the error rate, and in turn boost the system throughput. The network can be studied using a simplified model, the two-way relay channel, where two parties exchange messages via the assist

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Jesser, William Augustus. "Coding performance on satellite channels using AX. 25 protocol /." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06302009-040244/.

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30

Al-Agamy, M. A. A. "Time-efficient error correction coding for the Rayleigh fading mobile communications channel." Thesis, University of Kent, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304148.

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31

Tateesh, Said. "Multi-rate source and channel coding for CDMA-based mobile communication systems." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/844534/.

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In a mobile environment, communication links are subject to a wide range of channel variations due to mobility, multipath fading, shadowing, interference, etc. These variations combined with limited allocated bandwidth often constrain the design of such links and result in degradation of the quality of service and lowered capacity. Techniques such as error correction code are often used to mitigate channel errors at the expense of bandwidth. Other techniques such as the use of smaller cells with extensive frequency re-use are used to enhance system capacity. However, this operation approaches

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32

Migdadi, Hassan S. O. "The realization of signal processing methods and their hardware implementation over multi-carrier modulation using FPGA technology. Validation and implementation of multi-carrier modulation on FPGA, and signal processing of the channel estimation techniques and filter bank architectures for DWT using HDL coding for mobile and wireless applications." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/8720.

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First part of this thesis presents the design, validation, and implementation of an Orthogonal Frequency Division Multiplexing (OFDM) transmitter and receiver on a Cyclone II FPGA chip using DSP builder and Quartus II high level design tools. The resources in terms of logical elements (LE) including combinational functions and logic registers allocated by the model have been investigated and addressed. The result shows that implementing the basic OFDM transceiver allocates about 14% (equivalent to 6% at transmitter and 8% at receiver) of the available LE resources on an Altera Cyclone II EP2C

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Chu, Li Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Space-time coded transmission schemes on wireless channels." Awarded by:University of New South Wales. Electrical Engineering & Telecommunications, 2007. http://handle.unsw.edu.au/1959.4/40880.

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Highly reliable and fast wireless communication services demand the communication channel capacity to be fully exploited. Vast amount of research effort have been expanded in the development of advance technologies, such as signal processing, channel coding, modulation/demodulation, diversity techniques, and so on. This thesis focuses on the development of space-time coded transmission schemes. In order to provide high diversity gain with minimum design complexity, we propose a closed-loop beamforming transmission technology combined with existing simple channel coding method. We show that th

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Migdadi, Hassan Saleh Okleh. "The realization of signal processing methods and their hardware implementation over multi-carrier modulation using FPGA technology : validation and implementation of multi-carrier modulation on FPGA, and signal processing of the channel estimation techniques and filter bank architectures for DWT using HDL coding for mobile and wireless applications." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/8720.

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First part of this thesis presents the design, validation, and implementation of an Orthogonal Frequency Division Multiplexing (OFDM) transmitter and receiver on a Cyclone II FPGA chip using DSP builder and Quartus II high level design tools. The resources in terms of logical elements (LE) including combinational functions and logic registers allocated by the model have been investigated and addressed. The result shows that implementing the basic OFDM transceiver allocates about 14% (equivalent to 6% at transmitter and 8% at receiver) of the available LE resources on an Altera Cyclone II EP2C3

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Tang, Kai. "Coding and interference suppression for CDMA systems on fading channels /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3029647.

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Malan, Estian. "Multi-dimensional direct-sequence spread spectrum multiple-access communication with adaptive channel coding." Pretoria : [S.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-10252007-142715/.

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Trinca, Cibele Cristina [UNESP]. "A contribuition to the study of channel coding in wireless communication systems." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/100303.

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Made available in DSpace on 2014-06-11T19:30:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-19Bitstream added on 2014-06-13T19:19:29Z : No. of bitstreams: 1 trinca_cc_dr_ilha.pdf: 1118416 bytes, checksum: f85a3bd2fa02e5e7297b83660b83ef1d (MD5)<br>Recentemente, códigos perfeitos mínimos e não-mínimos com atraso foram propostos para qualquer canal de dimensão n. A construção destes códigos aparece na literatura como um subconjunto de álgebras de divisão cíclicas sobre Q(x3) somente para a dimensão n = 2sn1, onde s ∈ {0,1}, n1 é ímpar e as constelações de sinais são isomorfas a Z[

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Atungsiri, Samuel Asangbeng. "Joint source and channel coding for low bit rate speech communication systems." Thesis, University of Surrey, 1991. http://epubs.surrey.ac.uk/989/.

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Trinca, Cibele Cristina. "A contribuition to the study of channel coding in wireless communication systems /." Ilha Solteira, 2013. http://hdl.handle.net/11449/100303.

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Orientador: Jozué Vieira Filho<br>Coorientador: Edson Donizete de Carvalho<br>Banca: Carlos Roberto Minussi<br>Banca: Francisco Villarreal Alvarado<br>Banca: Jean-Claude Belfiore<br>Banca: Bartolomeu Ferreira Uchôa Filho<br>Resumo: Recentemente, códigos perfeitos mínimos e não-mínimos com atraso foram propostos para qualquer canal de dimensão n. A construção destes códigos aparece na literatura como um subconjunto de álgebras de divisão cíclicas sobre Q(x3) somente para a dimensão n = 2sn1, onde s ∈ {0,1}, n1 é ímpar e as constelações de sinais são isomorfas a Z[x3]n. Neste trabalho, revisa-se

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Fíla, Lukáš. "Model optického komunikačního systému na principu OFDM." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219867.

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The work explores ways to generate the OFDM signal and LDPC channel coding methods. Describes the creation of basic modules of the communication system in Matlab and simulation methods for atmospheric transmission environment, including effects of turbulence, attenuation along the route and weather conditions on the transmitted signal.

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Ahmed, Alaa Hussain. "Physical layer network coding based communication systems in frequency selective channels." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/3871.

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The demand for wireless communications is growing every day which requiresmore speed and bandwidth. In two way relay networks (TWRN), physical layer network coding (PLNC) was proposed to double the bandwidth. A TWRN is a system where two end users exchange data through a middle node called the relay. The two signals are allowed to be physically added before being broadcasted back to the end users. This system can work smoothly in flat fading channels, but can not be applied straightforward in frequency selective channels. In a multipath multi-tap FIR channel, the inter-symbol interference (ISI

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Tao, Meixia. "Space-time coding schemes for wireless communications over flat fading channels /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202003%20TAO.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 111-118). Also available in electronic version. Access restricted to campus users.

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Camargo, Alfonso [Verfasser]. "Adaptive Modulation, Channel Coding and MIMO Schemes for Practical OFDM Systems / Alfonso Camargo." Aachen : Shaker, 2009. http://d-nb.info/1156517877/34.

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Fozunbal, Majid. "Coding and Information-Theoretic Aspects of Multiple Antenna Communication Systems." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6972.

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Future wireless networks will be required to transmit real-time multimedia data reliably with high speed and low latency. This demands new approaches to the design and analysis of wireless networks. In this context, multiple antenna architectures are a promising solution which provide wireless systems with a high degree of functionality, adaptability, capacity, and robustness. However, efficient use of these systems is possible only by solving a number of critical problems. In this dissertation, we focus on coding and information theoretic aspects of multiple antenna systems. Knowledge in the

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Ivkovic, Milos. "Characterization and Coding Techniques for Long-Haul Optical Telecommunication Systems." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/196150.

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This dissertation is a study of error in long haul optical fiber systems and how to coupe with them. First we characterize error events occurring during transmission, then we determine lower bounds on information capacity (achievable information rates) and at the end we propose coding schemes for these systems.Existing approaches for obtaining probability density functions (PDFs) for pulse energy in long-haul optical fiber transmission systems rely on numerical simulations or analytical approximations. Numerical simulations make far tails of the PDFs difficult to obtain, while existing ana

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Vigato, Alberto. "Advanced Coding and Modulation for Digital Terrestrial Broadcasting and Cellular Systems." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3421884.

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A new platform for HDTV transmissions, in the form of a new generation terrestrial digital video broadcasting standard (DVB-T2), has been developed by the DVB Project. A number of technical innovations have been included in DVB-T2 to boost throughput and ruggedness, enhance single-frequency network coverage, and ease both transmitter and receiver implementation. Several strategies have been investigated during the standard definition. This thesis present a research branch of this investigation starting from a multi-antenna overview: a new soft detector for space-time block codes (STBCs) is pro

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Huang, Kuan Lun Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Precoder design and adaptive modulation for MIMO broadcast channels." Awarded by:University of New South Wales. Electrical Engineering & Telecommunications, 2007. http://handle.unsw.edu.au/1959.4/40735.

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Multiple-input multiple-output (MIMO) technology, originated in the 1990s, is an emerging and fast growing area of communication research due to the ability to provide diversity as well as transmission degrees-of-freedom. Recent research focus on MIMO systems has shifted from the point-to-point link to the one-to-many multiuser links due to the ever increasing demand for multimedia-intensive services from users. The downlink of a multiuser transmission is called the broadcast channel (BC) and the reverse many-to-one uplink is termed the multiple access channel (MAC). Early studies in the MIMO

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Subramanian, Arunkumar. "Coding techniques for information-theoretic strong secrecy on wiretap channels." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42776.

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Traditional solutions to information security in communication systems act in the application layer and are oblivious to the effects in the physical layer. Physical-layer security methods, of which information-theoretic security is a special case, try to extract security from the random effects in the physical layer. In information-theoretic security, there are two asymptotic notions of secrecy---weak and strong secrecy This dissertation investigates the problem of information-theoretic strong secrecy on the binary erasure wiretap channel (BEWC) with a specific focus on designing practical co

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Karimdady, Sharifabad Farnaz. "Covariance Modeling and Space-Time Coding for MIMO systems." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3510.

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The full spatial covariance matrix of the multiple input multiple-output (MIMO) channel is an important quantity in channel modeling, communication system signal processing, and performance analysis, and therefore this matrix forms the heart of the research outlined in this dissertation. The work begins with an investigation of a generalized framework for computing the full MIMO spatial covariance based on the power angular spectrum (PAS) of the multipath field and the transmit and receive antenna element radiation patterns. For the case of uniform linear arrays and when the PAS clusters satis

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Gong, Yi. "Space-time coding for high data-rate wireless communications over space and frequency selective fading channels /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202002%20GONG.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.<br>Includes bibliographical references (leaves 105-114). Also available in electronic version. Access restricted to campus users.

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