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Dissertations / Theses on the topic 'Channel estimation and training'

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Published: 4 June 2021

Last updated: 8 February 2022

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1

Potter, Chris. "Modeling Channel Estimation Error in Continuously Varying MIMO Channels." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604490.

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ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>The accuracy of channel estimation plays a crucial role in the demodulation of data symbols sent across an unknown wireless medium. In this work a new analytical expression for the channel estimation error of a multiple input multiple output (MIMO) system is obtained when the wireless medium is continuously changing in the temporal domain. Numerical examples are provided to illustrate our find

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2

Moosvi, Syed Mohsin Abbas. "Advances in superimposed training for channel estimation and equalisation." Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444041.

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3

Whitworth, Timothy. "Channel estimation, data detection and training design for wireless communications." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493283.

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With modern wireless communications seeking to attain higher data rates, possibly over time-varying channels, there is an urgent need for fast and efficient techniques for accurate channel estimation and data detection. This thesis proposes a number of novel solutions to the aforementioned problem.

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4

He, Shuangchi. "Doubly-selective channel estimation and equalization using superimposed training and expansion models." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Dissertations/HE_SHUANGCHI_5.pdf.

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5

Siyau, M. F. "A Novel training-based MIMO channel estimation scheme for layered space-time systems in frequency selective wireless channels." Thesis, Department of Aerospace, Power & Sensors, 2009. http://hdl.handle.net/1826/3464.

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New development in wireless technology using multiple antennas with appropriate space-time processing has recently become the new frontier of wireless communication systems due to the potential for providing very high spectral efficiency and enormous capacity improvement over the conventional wireless radio communications. The technical advances in using the multiple-input multiple-output (MIMO) wireless links present a promising breakthrough in resolving the bottleneck of current capacity limitation for future intensive wireless networks. The MIMO wireless systems utilize multiple antennas at

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6

Siyau, Ming Fei. "A novel training-based MIMO channel estimation scheme for layered space-time systems in frequency selective wireless channels." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/3464.

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New development in wireless technology using multiple antennas with appropriate space-time processing has recently become the new frontier of wireless communication systems due to the potential for providing very high spectral efficiency and enormous capacity improvement over the conventional wireless radio communications. The technical advances in using the multiple-input multiple-output (MIMO) wireless links present a promising breakthrough in resolving the bottleneck of current capacity limitation for future intensive wireless networks. The MIMO wireless systems utilize multiple antennas at

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7

Nguyen, Nam Tran Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Training signal and precoder dsigns for channel estimation and symbol detection in MIMO and OFDM systems." Awarded by:University of New South Wales. Electrical Engineering & Telecommunications, 2008. http://handle.unsw.edu.au/1959.4/43243.

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Research in wireless communications has been actively carried out in recent years. In order to enable a high data transmission rate, multiple-input multiple-output (MIMO) communications has been proposed and commonly adopted. Accurate channel identification and reliable data detection are major challenges in the implementation of a communications system operating over a wireless fading channel. These issues become even more challenging in MIMO systems since there are many more parameters involved in the estimation processes. This thesis, consisting of four major parts, focuses on applying conv

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8

Luong, Dung Viet Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Optimal training sequence design for MIMO-OFDM in spatially correlated fading environments." Awarded by:University of New South Wales. Electrical Engineering & Telecommunications, 2009. http://handle.unsw.edu.au/1959.4/44513.

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Multiple Input Multiple Output with Orthogonal Frequency Division Multiplexing (MIMOOFDM) has been widely adopted as one of the most promising air interface solutions for future broadband wireless communication systems due to its high rate transmission capability and robustness against multipath fading. However, these MIMO-OFDM advantages cannot be achieved unless the channel state information (CSI) can be obtained accurately and promptly at the receiver to assist coherent detection of data symbols. Channel estimation and training sequence design are, therefore, still open challenges of great

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9

Kudathanthirige, Dhanushka Priyankara. "DESIGN AND ANALYSIS OF TRANSMISSION STRATEGIES FOR TRAINING-BASED MASSIVE MIMO SYSTEMS." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/dissertations/1864.

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The next-generation wireless technologies are currently being researched to address the ever-increasing demands for higher data rates, massive connectivity, improved reliability, and extended coverage. Recently, massive multiple-input multiple-output (MIMO) has gained significant attention as a new physical-layer transmission technology that can achieve unprecedented spectral and energy efficiency gains via aggressive spatial multiplexing. Thus, massive MIMO has been one of the key enabling technologies for the fifth-generation and subsequent wireless standards. This dissertation thus focuses

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10

Pagadarai, Srikanth. "Wireless Communications and Spectrum Characterization in Impaired Channel Environments." Digital WPI, 2012. https://digitalcommons.wpi.edu/etd-dissertations/33.

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The demand for sophisticated wireless applications capable of conveying information content represented in various forms such as voice, data, audio and video is ever increasing. In order to support such applications, either additional wireless spectrum is needed or advanced signal processing techniques must be employed by the next-generation wireless communication systems. An immediate observation that can be made regarding the first option is that radio frequency spectrum is a limited natural resource. Moreover, since existing spectrum allocation policies of several national regulatory agenci

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11

Pachai, Kannu Arun. "Communications over noncoherent doubly selective channels." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1173887288.

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12

Kane, Roma. "Multiuser TDMA channel estimation." Diss., Columbia, Mo. : University of Missouri-Columbia, 2004. http://hdl.handle.net/10355/5810.

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Thesis (M.S.)--University of Missouri-Columbia, 2004.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (June 30, 2006) Vita. Includes bibliographical references.

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13

Song, Limeng. "ATSC DTV Channel Estimation." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26235/26235.pdf.

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14

Gurel, Ilker. "Channel Estimation For Ofdm Systems." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606940/index.pdf.

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In this thesis, various pilot symbol aided channel estimation and tracking methods are investigated and their performances are compared for an OFDM system with packet based communication on HF channel. For the HF channel, Watterson HF channel model is used. The compared methods are least squares (LS) channel estimation, linear minimum mean square error (LMMSE) channel estimation, least mean squares (LMS) channel tracking, recursive least squares (RLS) channel tracking, constant position model based Kalman filter channel tracking, and constant velocity model based Kalman filter channel tracking

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15

Dessalermos, Spyridon. "Undersea acoustic propagation channel estimation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FDessalermos.pdf.

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Thesis (M.S. in Electrical Engineering and M.S. in Applied Physics)--Naval Postgraduate School, June 2005.<br>Thesis Advisor(s): Joseph Rice, Roberto Cristi. Includes bibliographical references (p. 117-119). Also available online.

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16

Richter, Andreas. "Estimation of radio channel parameters." Ilmenau : ISLE, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=981051421.

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17

Lu, Biao. "Wireline channel estimation and equalization /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004324.

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18

Ho, Kenneth T. "Uplink channel estimation in WiMAX." College Park, Md. : University of Maryland, 2008. http://hdl.handle.net/1903/8214.

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Thesis (M.S.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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19

Carroll, Brian Michael. "Analysis of Sparse Channel Estimation." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1244045602.

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20

Kim, JoonBeom. "Iterative Channel Estimation for Wireless Communications." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14064.

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The main objective of this dissertation is to present the structural design, performance evaluation, and complexity reduction of iterative joint channel estimation and data detection receivers. One of the main technical challenges in advanced wireless communications stems from the characteristics of a wireless channel, e.g., time selectivity of a channel, mobility of users, and multipath propagation. Channel estimation is essential for achieving reliable information transmission for practical wireless communication applications. Numerous channel estimation structures have been developed for

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21

Avan, Muhammet. "Joint Frequency Offset And Channel Estimation." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610149/index.pdf.

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In this thesis study, joint frequency offset and channel estimation methods for single-input single-output (SISO) systems are examined. The performance of maximum likelihood estimate of the parameters are studied for different training sequences. Conventionally training sequences are designed solely for the channel estimation purpose. We present a numerical comparison of different training sequences for the joint estimation problem. The performance comparisons are made in terms of mean square estimation error (MSE) versus SNR and MSE versus the total training energy metrics. A novel estimation

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22

Ahmed, Mohsin Niaz. "LTE Uplink Modeling and Channel Estimation." Thesis, Linköpings universitet, Datorteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69571.

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This master thesis investigates the uplink transmition from User Equipment (UE) to base station in LET (Long Term Evolution) and channel estimation using pilot symbols with parameter defined in 3GPP (3rd Generation Partnership Project) specifications. The purpose of the thesis was to implement a simulator which can generate uplink signal as it is generated by UE. The Third Generation (3G) mobile system was given the name LTE. This thesis focus on the uplink of LTE where single carrier frequency division multiple access (SC-FDMA) is utilized as a multiple access technique. The advantage over th

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23

Alli, Idd Pazi. "Channel estimation in mobile wireless systems." Thesis, KTH, Signalbehandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98754.

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The demands of multimedia services from mobile user equipment (UE) for achieving high data rate, high capacity and reliable communication in modern mobile wireless systems are continually ever-growing. As a consequence, several technologies, such as the Universal Mobile Telecommunications System (UMTS) and the 3rd Generation Partnership Project (3GPP), have been used to meet these challenges. However, due to the channel fading and the Doppler shifts caused by user mobility, a common problem in wireless systems, additional technologies are needed to combat multipath propagation fading and Doppl

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24

Patel, Chirag S. "Wireless channel modeling, simulation, and estimation." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-03282006-200818/.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2006.<br>Andrew, Alfred, Committee Member ; Durgin, Gregory, Committee Member ; Li, Geoffrey, Committee Member ; Ingram, Mary Ann, Committee Member ; Stuber, Gordon, Committee Chair.

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25

Xinzhu, Jin. "Channel Estimation Techniques of SC-FDMA." Thesis, Karlstad University, Faculty of Technology and Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1262.

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<p>Abstract</p><p>This master thesis investigates several di®erent channel estimation techniques in an SC-</p><p>FDMA (Single Carrier Frequency Division Multiple Access) system with parameters set</p><p>according to the standards of 3GPP LTE (3rd Generation Partnership Project Long Term</p><p>Evolution). 3GPP LTE is the name given to a project within the 3GPP to improve the</p><p>mobile phone standard to cope with future requirements. In this thesis, we ¯rst introduce</p><p>the SC-FDMA system, which is a transmission technique that utilizes single carrier mod-</p><p>ulation, then ¯ve types of

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26

Lindén, Erik. "Iterative Channel Estimation in LTE Uplink." Thesis, KTH, Kommunikationsteori, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147128.

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An algorithm for iterative channel estimation using soft feedback for LTE uplink is proposed. The algorithm has low complexity compared to MMSE estimation and does not require knowledge of the channel statistics. A simple polynomial model is used for noise suppression across OFDM symbols and a DCT-based filter is used for noise suppression across subcarriers. The algorithm has been tested on several channel models and has been shown to provide a gain of about 0:5 dB with two estimation stages, compared to the no-feedback case. Further, the algorithm has been applied to a MIMO case. A compariso

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27

Yi, Na. "Channel estimation for linear block transmissions." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426104.

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28

Mai, Huiheng. "Iterative channel estimation for wireless communications." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433681.

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29

Kleynhans, Waldo. "On channel estimation for mobile WiMAX." Diss., Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01262009-102433/.

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30

Hogstrom, Christopher. "SPARSE CHANNEL ESTIMATION FOR AERONAUTICAL TELEMETRY." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624251.

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This paper applies a compressed sensing (CS) algorithm to SOQPSK-TG waveform samples to reconstruct a sparse channel. The mean squared error (MSE) is computed between the estimated channel and the true channel. The estimated channel is then used in an equalized system and a bit error rate (BER) curve is calculated. The results are then compared to a Maximum Likelihood (ML) estimator. The CS estimate does not produce significant gains but it doesn’t break anything either.

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31

Saad, Haea. "Enhanced Channel Estimation for MIMO-OFDM in 5G NR : or an analysis of the channel estimation performance." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85070.

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32

Jain, Payal. "On the Impact of Channel and Channel Quality Estimation on Adaptive Modulation." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/36072.

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The rapid growth in wireless communications has given rise to an increasing demand for channel capacity using limited bandwidth. Wireless channels vary over time due to fading and changing interference conditions. Typical wireless systems are designed by choosing a modulation scheme to meet worst case conditions and thus rely on power control to adapt to changing channel conditions. Adaptive modulation, however, exploits these channel variations to improve the spectral efficiency of wireless communications by intelligently changing the modulation scheme based on channel conditions. Necessar

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33

Mheidat, Hakam. "Channel Estimation and Equalization for Cooperative Communication." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2852.

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The revolutionary concept of space-time coding introduced in the last decade has demonstrated that the deployment of multiple antennas at the transmitter allows for simultaneous increase in throughput and reliability because of the additional degrees of freedom offered by the spatial dimension of the wireless channel. However, the use of antenna arrays is not practical for deployment in some practical scenarios, e. g. , sensor networks, due to space and power limitations. <br /><br /> A new form of realizing transmit diversity has been recently introduced under the name of user cooper

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34

Kaats, Adrian. "Estimation of biological ion channel permeation properties." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110344.

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Methods are presented for improving the accuracy of the value of the diffusion coefficient used in continuum theory based simulation of ion channel permeation. A mathematical framework is derived for computing the diffusion coefficient of a spherical species undergoing diffusion confined within an arbitrarily defined container. Methods for standardizing the coordinates of the atoms constituting biological ion channels are presented. From its standardized coordinates, a method is described for rendering the channel's pore lining surface. This surface representation is used as the definition of

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35

Yao, Ning. "Iterative algorithms for channel estimation and equalization /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20YAO.

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36

Abd, El-Sallam Amar. "Low order channel estimation for CDMA systems." Curtin University of Technology, Department of Electrical and Computer Engineering, 2005. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=16299.

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New approaches and algorithms are developed for the identification and estimation of low order models that represent multipath channel effects in Code Division Multiple Access (CDMA) communication systems. Based on these parsimonious channel models, low complexity receivers such as RAKE receivers are considered to exploit these propagation effects and enhance the system performance. We consider the scenario where multipath is frequency selective slowly fading and where the channel components including delays and attenuation coefficients are assumed to be constant over one or few signalling int

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37

Stirling, Iain G. "On multipath channel estimation for CDMA systems." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415361.

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38

COSTA, RENATA BRAZ FALCAO DA. "CHANNEL ESTIMATION OVER POWER LINE COMMUNICATIONS SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11480@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A utilização das linhas de potência para fins de comunicação vem recebendo grande atenção nos últimos anos, principalmente devido a grande demanda por serviços de telecomunicações. A grande virtude é que as linhas de potência para comunicação apresentam uma solução sem a necessidade de nova fiação. Além disso, apresentam saída de potência disponível em todos os cômodos de uma residência, onde o terminal de comunicação possa ser usado, são de fácil instalação e acima de tudo apresentam custo reduzido. Sendo assim a comunicaçã

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39

Trepkowski, Rose E. "Channel Estimation Strategies for Coded MIMO Systems." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10062.

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High transmission data rate, spectral efficiency, and reliability are necessary for future wireless communications systems. In a multipath-rich wireless channel, deploying multiple antennas at both the transmitter and receiver achieves high data rate, without increasing the total transmission power or bandwidth. When perfect knowledge of the wireless channel conditions is available at the receiver, the capacity has been shown to grow linearly with the number of antennas. However, the channel conditions must be estimated since perfect channel knowledge is never known a priori. In practice, the

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40

Lin, Chih Wei, and 林智偉. "Channel Estimation for MIMO-OFDM Systems Using STBC Training Sequences." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/72150826295902752974.

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碩士<br>長庚大學<br>電機工程學研究所<br>97<br>Abstract In recent years, due to the increase of transmission material quantity and on the basis of narrow in bandwidth , new motion mechanics of communication must have more bandwidth efficiency and provide less wrong rate in order to meet recent requirement. Orthogonal frequency division multiplexing(OFDM) plays an important role in wireless communication systems because it utilizes the Fast Fourier Transform as modulation technique to reduce production complex and uses guard interval to combat the inter-symbol interference in the transmit symbols. These make

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Lee, Wen-Ming, and 李汶洺. "Optimal Channel Prediction for Training Overhead Reduction in LTE-A Uplink under Channel Estimation Errors." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/99329437505918947192.

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碩士<br>國立交通大學<br>電信工程研究所<br>100<br>Energy efficiency is a critical demand in the design of next generation wireless communication systems such as Long Term Evolution (LTE). In this thesis, we study the problem of training overhead reduction for LTE uplink transmission, in which the Single-Carrier Frequency Division Multiple Access (SC-FDMA) modulation is adopted. Motivated by the fact that samples of real-world wireless channels are typically correlated in time, we propose to exploit such temporal correlation to develop a new channel prediction scheme for training overhead reduction. More speci

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42

Tso-Jen, Chu. "Training-Based Channel Estimation and Power Allocation for MIMO-OFDM Systems." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2607200613032300.

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Chiang, Wei-Cheng, and 江威震. "Training Sequence Design for Discriminatory Channel Estimation in Wireless MIMO Systems." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/21663741715278088272.

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Chu, Tso-Jen, and 朱祚仁. "Training-Based Channel Estimation and Power Allocation for MIMO-OFDM Systems." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/06904284738287126915.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>94<br>This thesis addresses the problem of training–based channel estimation for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. We present a channel estimation scheme based on training guard intervals. This way, the receiver can estimate and track the channel variations semi-blindly based on first order statistics of the received signal. There is no extra loss of information rate as opposed to training sequence based methods , no condition imposed on the channel, and no scaling ambiguity as opposed to second (or high

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Chan, Sheng-Chung, and 詹盛仲. "Channel Estimation and PAPR Reduction with Superimposed Training for OFDM Systems." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/72190240129273264332.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程所<br>95<br>In this thesis, first, The BER performance and PAPR as a function of the pilot amplitude and block length are analyzed and discussed. We verify that with the larger pilot amplitude a better accuracy in the channel estimation is achieved. However, it can be reached the mean square error (MSE) of channel is more sensitive to the pilot amplitude. Then we use a nonlinear companding technique called “exponential companding” to reduce the PAPR of OFDM signals. It can transform Gaussian distribution signals into uniform distributed signals. It does not change the

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46

Huang, Chao-Wei, and 黃昭瑋. "Two-Way Training Design for Discriminatory Channel Estimation in Wireless MIMO Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/39052366661285591678.

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碩士<br>國立清華大學<br>通訊工程研究所<br>99<br>Thisworkexaminestheuseoftwo-waytraininginmultiple-inputmultiple-output(MIMO)wirelesssystemstodiscriminatethechannelestimationperformancesbetweenalegitimatereceiver(LR)andanunauthorizedreceiver(UR).Thisthesisextendsuponthepreviouslyproposeddiscriminatorychannelestimation(DCE)schemethatallowsonlythetransmittertosendtrainingsignals.ThegoalofDCEistominimizethechannelestimationerroratLRwhilerequiringthechannelestimationerroratURtoremainbeyondacertainlevel.Ifthetrainingsignalissentonlybythetransmitter,theperformancediscriminationbetweenLRandURwillbelimitedsincethetra

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Hao, Lin, and 林昊. "Pilot Design for Training-based Channel Estimation in MU-MIMO Relay Communication." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/fu36kf.

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碩士<br>國立中央大學<br>通訊工程學系<br>105<br>Multi-user multiple-input multiple-output ( MU-MIMO ) technology by combining the terminal equipment to achieve the base station can use the maximum available bandwidth at the same time service terminal user group, solving the problem of time-frequency resources in single-user MIMO system. Speeding data rates while also ensuring better network coverage. In a fading channel with a long distance, the relay acts as a means of storing and transferring information from the source to the destination in the wireless communication system. Therefore, for multi-user term

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48

Chang, Chia-Hua, and 張嘉華. "Carrier Frequency Offset and Channel Estimation with Superimposed Training Sequence in OFDM Systems." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/01066759980542061776.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程所<br>96<br>Superimposed training scheme for carrier frequency offset (CFO) and channel estimation in OFDM system will be analyzed and discussed. The given training sequence is superimposed on the information data and is used for the correlation of the two consequent OFDM blocks to achieve the CFO estimation. Simulations show that the superimposed training sequence which is added in time domain has better Mean Square Error (MSE) performance than that in frequency domain for the CFO estimation. Furthermore, channel estimation can be achieved with the superimposed train

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Kao, Ming-Hsuan, and 高旻暄. "Training Sequence Design for Channel Estimation in Uplink TRDMA System with Receive Beamforming." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/39272500666982383589.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>104<br>This thesis is focus on the channel estimation of TRDMA system with receive beamforming. We address the problem of how to design a good train- ing sequence for this system and also address the problem that how BS could make a good training sequence assignment so that the multi-user interference (MUI) by way of the limitation resource of training sequence could be re- duce and mitigate. Our proposed method appropriately arranged the training sequence for users and make a good decision that some training sequence re- source could be reuse. This could be accommo

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Yang, Yi-Syun, and 楊易洵. "Channel Estimation for the Superimposed Training Scheme in OFDM Systems without Cyclic Prefix." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/65505705447263860558.

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碩士<br>國立中山大學<br>通訊工程研究所<br>96<br>Bandwidth efficiency is a critical concern in wireless communications. To fully utilize the available bandwidth, the superimposed training (ST) scheme is adopted in this thesis for orthogonal frequency division multiplexing (OFDM) systems without using the cyclic prefix (CP) and the guard interval (GI). It is shown that the performance of the channel estimation using the ST scheme is the same for both the proposed architecture, denoted as OFDM-ST, and the conventional OFDM system with CP, denoted as CP-OFDM-ST. In addition, since the CP is not added in the prop

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