Log in

Relevant bibliographies by topics / Affine Frequency Division Multiplexing / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Affine Frequency Division Multiplexing.

Dissertations / Theses on the topic 'Affine Frequency Division Multiplexing'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Affine Frequency Division Multiplexing.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Bemani, Ali. "Affine Frequency Division Multiplexing (AFDM) for Wireless Communications." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS610.pdf.

Full text

Abstract:

La recherche de nouvelles formes d'onde robustes, lorsque utilisées sur des canaux doublement sélectifs, est primordiale. De telles formes d'onde permettraient donc d'assurer des communications fiables pour les réseaux sans fil de nouvelle génération dans les scénarios de haute mobilité. Dans cette thèse, une nouvelle solution, le affine frequency division multiplexing (AFDM), est proposée. Cette nouvelle forme d'onde de type multichirps est basée sur la transformée de Fourier affine discrète (DAFT), une variante de la transformée de Fourier discrète caractérisée par deux paramètres pouvant êt

APA, Harvard, Vancouver, ISO, and other styles

2

Recio, Adolfo Leon. "Spectrum-Aware Orthogonal Frequency Division Multiplexing." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/30193.

Full text

Abstract:

Reconfigurable computing architectures are well suited for the dynamic data flow processing requirements of software-defined radio. The software radio concept has quickly evolved to include spectrum sensing, awareness, and cognitive algorithms for machine learning resulting in the cognitive radio model. This work explores the application of reconfigurable hardware to the physical layer of cognitive radios using non-contiguous multi-carrier radio techniques. The practical tasks of spectrum sensing, frame detection, synchronization, channel estimation, and mutual interference mitigation are c

APA, Harvard, Vancouver, ISO, and other styles

3

Challakere, Nagaravind. "Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1423.

Full text

Abstract:

This thesis presents a novel method to solve the problem of estimating the carrier frequency set in an Orthogonal Frequency Division Multiplexing (OFDM) system. The approach is based on the minimization of the probability of symbol error. Hence, this approach is called the Minimum Symbol Error Rate (MSER) approach. An existing approach based on Maximum Likelihood (ML) is chosen to benchmark the performance of the MSER-based algorithm. The MSER approach is computationally intensive. The thesis evaluates the approximations that can be made to the MSER-based objective function to make the computa

APA, Harvard, Vancouver, ISO, and other styles

4

Zhang, Hua. "Orthogonal Frequency Division Multiplexing for Wireless Communications." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4960.

Full text

Abstract:

OFDM is a promising technique for high-data-rate wireless communications because it can combat inter-symbol interference (ISI) caused by the dispersive fading of wireless channels. The proposed research focuses on techniques that improve the performance of OFDM-based wireless communications and its commercial and military applications. In particular, we address the following aspects of OFDM: inter-channel interference (ICI) suppression, interference suppression for clustered OFDM, clustered OFDM based anti-jamming modulation, channel estimation for MIMO-OFDM, MIMO transmission with limited fee

APA, Harvard, Vancouver, ISO, and other styles

5

Kim, Dukhyun. "Orthogonal frequency division multiplexing for digital broadcasting." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/13704.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Bledowski, Ian A. "Frequency-division-multiplexing technique for imaging metrology." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9286.

Full text

Abstract:

An algorithm to multiplex multiple image captures simultaneously onto a single image sensor at full frame resolution was developed for imaging metrology. Parseval’s theorem was used to obtain the image intensity from image time-series of around typically 256 frames captured by the imaging sensor at typically 60 fps, though kHz frame rates are possible, hardware permitting. The time-series contained contributions from each image channel in the system, which were created by periodically modulating the intensity of the light source which defined that channel. The modulating time-series was conver

APA, Harvard, Vancouver, ISO, and other styles

7

Clark, Alan. "On Coding for Orthogonal Frequency Division Multiplexing Systems." Thesis, University of Canterbury. Electrical and Computer Engineering, 2006. http://hdl.handle.net/10092/1092.

Full text

Abstract:

The main contribution of this thesis is the statistical analysis of orthogonal frequency di- vision multiplexing (OFDM) systems operating over wireless channels that are both fre- quency selective and Rayleigh fading. We first describe the instantaneous capacity of such systems using a central limit theorem, as well as the asymptotic capacity of a power lim- ited OFDM system as the number of subcarriers approaches infinity. We then analyse the performance of uncoded OFDM systems by first developing bounds on the block error rate. Next we show that the distribution of the number of symbol

APA, Harvard, Vancouver, ISO, and other styles

8

李世榮 and Sai-weng Lei. "Adaptive interleaving for orthogonal frequency division multiplexing systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31224702.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lepley, Jason J. "Frequency stabilisation for dense wavelength division multiplexing systems." Thesis, University of Essex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310059.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Wang, Samuel Y. "Perfect shuffle optical frequency division multiplexing (PS/OFDM)." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/14255.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Bouziane, R. "Real-time optical orthogonal frequency division multiplexing transceivers." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1383794/.

Full text

Abstract:

Optical orthogonal frequency division multiplexing (O-OFDM) is a potential candidate for 100 Gigabit Ethernet (GbE) and beyond due to its high spectral efficiency and strong resilience towards chromatic and polarization mode dispersion. In this thesis, investigations have been performed into the feasibility of O-OFDM in high speed optical fibre communications. First, an overview of OFDM fundamentals and optical fibre communications is given. Numerical simulations which were performed to characterise and optimise real-time OFDM transceivers are then presented. The effects of a variety of design

APA, Harvard, Vancouver, ISO, and other styles

12

Omomukuyo, O. O. "Orthogonal frequency division multiplexing for optical access networks." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1400463/.

Full text

Abstract:

Orthogonal Frequency Division Multiplexing (OFDM) is a modulation scheme with numerous advantages that has for years been employed as the leading physical interface in many wired and wireless communication systems. Recently, with advancements made in digital signal processing, there has been a surge of interest in applying OFDM techniques for optical communications. This thesis presents extensive research on optical OFDM and how it is being applied in access networks. With the aid of theoretical analysis, simulations and experiments, it is shown that the system performance of direct-detection

APA, Harvard, Vancouver, ISO, and other styles

13

Lei, Sai-weng. "Adaptive interleaving for orthogonal frequency division multiplexing systems /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B23295065.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Cai, Kun, and 蔡琨. "Bayesian carrier frequency offset estimation in orthogonal frequency division multiplexing systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841367.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Cai, Kun. "Bayesian carrier frequency offset estimation in orthogonal frequency division multiplexing systems." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841367.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Rende, Deniz. "Bit-interleaved space-frequency coded modulation for orthogonal frequency-division multiplexing systems." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0006420.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Deckert, Thomas. "Orthogonal frequency division multiplexing based medium access under rate constraints." Dresden Vogt, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3002150&prov=M&dok_var=1&dok_ext=htm.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Chen, Yingkan [Verfasser]. "Orthogonal Frequency-Division Multiplexing in Fiber-Optic Communication / Yingkan Chen." München : Verlag Dr. Hut, 2016. http://d-nb.info/1136601260/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Li, Kai. "Fast orthogonal frequency division multiplexing (Fast-OFDM) for wireless communications." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/17220/.

Full text

Abstract:

This thesis presents research that has addressed various design issues related to an adapted orthogonal frequency division multiplexing scheme, namely Fast-OFDM. A comparative study of the system with conventional OFDM in various signal mapping conditions has been investigated. The thesis reports on performance assessment in terms of bit-error-rate (BER) performance, spectral efficiency, peak-to-average-power ratio (PAPR), nonlinear effects and adjacent channel interference (ACI) analysis. The results show that the performance of Fast-OFDM is comparable to OFDM for single dimensional modulatio

APA, Harvard, Vancouver, ISO, and other styles

20

Guan, Karen Min 1978. "Quadrature amplitude modulated codes for orthogonal frequency division multiplexing applications." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87226.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Ansari, Ashlaghi Aria. "100 GBPS Orthogonal Frequency Division Multiplexing optical fiber communication network." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1604879.

Full text

Abstract:

<p> Optical fiber communication has emerged as a high potential substitute for communication methods such as twisted pair and coaxial wire. The main advantage of optical fiber over previous methods is to have higher capacity of data rate transmission. The conventional types of modulation and demodulation technique, which have been used through optical fiber communication system are Wavelength Division Multiplexing (WDM) technique and Dense Wavelength Division Multiplexing (DWDM) technique so far. </p><p> In this thesis, the Orthogonal Frequency Division Multiplexing (OFDM) is applied throug

APA, Harvard, Vancouver, ISO, and other styles

22

Simões, Gaspar Ivan. "Waveform Advancements and Synchronization Techniques for Generalized Frequency Division Multiplexing." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-201875.

Full text

Abstract:

To enable a new level of connectivity among machines as well as between people and machines, future wireless applications will demand higher requirements on data rates, response time, and reliability from the communication system. This will lead to a different system design, comprising a wide range of deployment scenarios. One important aspect is the evolution of physical layer (PHY), specifically the waveform modulation. The novel generalized frequency division multiplexing (GFDM) technique is a prominent proposal for a flexible block filtered multicarrier modulation. This thesis introduces

APA, Harvard, Vancouver, ISO, and other styles

23

Welling, Kenneth. "Coded Orthogonal Frequency Division Multiplexing for the Multipath Fading Channel." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/608525.

Full text

Abstract:

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>This paper presents a mathematical model for Coded Orthogonal Frequency Division Multiplexing (COFDM) in frequency selective multipath encountered in aeronautical telemetry. The use of the fast Fourier transform (FFT) for modulation and demodulation is reviewed. Error control coding with interleaving in frequency is able to provide reliable data communications during frequency selective multipath fade events. Simulations demonstrate QPSK mapped COFDM performs well

APA, Harvard, Vancouver, ISO, and other styles

24

Lee, King F. "Space-time and space-frequency coded orthogonal frequency division multiplexing transmitter diversity techniques." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/14981.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Wong, Kar Lun (Clarence). "Space-time-frequency channel estimation for multiple-antenna orthogonal frequency division multiplexing systems." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100244.

Full text

Abstract:

We propose a linear mean square error channel estimator that exploits the joint space-time-frequency (STF) correlations of the wireless fading channel for applications in multiple-antenna orthogonal frequency division multiplexing systems. Our work generalizes existing channel estimators to the full dimensions including transmit spatial, receive spatial, time, and frequency. This allows versatile applications of our STF channel estimator to any fading environment, ranging from spatially-uncorrelated slow-varying frequency-flat channels to spatially-correlated fast-varying frequency-selective c

APA, Harvard, Vancouver, ISO, and other styles

26

Oz, Ersoy. "A comparison of timing methods in orthogonal frequency division multiplexing (OFDM) systems." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FOz.pdf.

Full text

Abstract:

Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, Sept. 2004.<br>Thesis Advisor(s): Roberto Cristi, Murali Tummala. Includes bibliographical references (p. 169-173). Also available online.

APA, Harvard, Vancouver, ISO, and other styles

27

Chen, Jianwu, and 陳建武. "Frequency synchronization in OFDM-based systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40687338.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Chen, Jianwu. "Frequency synchronization in OFDM-based systems." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40687338.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Karaoglu, Bulent. "A comparison of frequency offset estimation methods in Orthogonal Frequency Division Multiplexing (OFDM) systems." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FKaraoglu.pdf.

Full text

Abstract:

Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, Dec. 2004.<br>Thesis Advisor(s): Roberto Cristi, Murali Tummala. Includes bibliographical references (p. 45-46). Also available online.

APA, Harvard, Vancouver, ISO, and other styles

30

Kaur, Amandeep. "Comparison of Different Predistortion Techniques for Orthogonal Frequency Division Multiplexing Systems." Thesis, California State University, Long Beach, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13426595.

Full text

Abstract:

<p> Wireless channels have significant problems like multipath fading, delay spread, frequency selective fading. Guard bands/channel equalization techniques are employed to overcome these. However, these solutions are complex and don’t solve the issue of bandwidth scarcity. Thus, Orthogonal Frequency Division Multiplexing was introduced; a special case of Frequency Division Multiplexing where orthogonal subcarriers overlap in the frequency domain using lesser bandwidth without any inter-symbol interference. </p><p> The next challenge is to reduce the error rate in transmission. This th

APA, Harvard, Vancouver, ISO, and other styles

31

Mohamed, Salma Darwish Abd Elaziz. "Modified Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (MACO-OFDM) system." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25820.

Full text

Abstract:

A modification to the Asymmetrically Clipped Optical OFDM (ACO-OFDM) technique, a well reported non-coherent optical implementation is proposed. A Modified ACO-OFDM (MACO-OFDM) system is developed to improve system performance at the expense of spectral efficiency. A MACO-OFDM system model is defined underpinned by a detailed mathematical framework verified through Monte Carlo simulations. System performance is compared to that of conventional ACO-OFDM. A 1.5 dB saving is achieved in the Bit Error Rate (BER) performance of 4-QAM ACO-OFDM after applying the proposed modification; the theoretica

APA, Harvard, Vancouver, ISO, and other styles

32

Acácio, Luís Carlos Lorenzo. "Equalização pré-FFT de sistemas baseados em orthogonal frequency-division multiplexing." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-17122004-154902/.

Full text

Abstract:

Esta dissertação trata da equalização no domínio do tempo de sistemas de comunicações digitais baseados em orthoghonal frequency-division multiplexing (OFDM), normalmente referida na literatura técnica como equalização pré-FFT. Tais sistemas foram originalmente projetados de modo a não necessitar de equalização, porém podem se beneficiar com seu uso, como mostrado a seguir. Foi implementado, em programa de computador, um simulador não codificado do sistema de televisão digital terrestre utilizado na Europa, o digital video broadcasting (DVB-T), que é baseado em OFDM e se encontra implantado co

APA, Harvard, Vancouver, ISO, and other styles

33

Hosseinpour, Ali. "Investigation of orthogonal frequency division multiplexing based Power Line Communication systems." Thesis, University of East London, 2015. http://roar.uel.ac.uk/4420/.

Full text

Abstract:

Power Line Communication (PLC) has the potential to become the preferred technique for providing broadband to homes and offices with the advantage of eliminating the need for new wiring infrastructure and reducing the cost. Power line grids, however, present a hostile channel for data communication, since the fundamental purpose of the power line channel was only the transmission of electric power at 50/60 Hz frequencies. The development of PLC systems for providing broadband applications requires an adequate knowledge of the power line channel characteristics. Various types of noise and multi

APA, Harvard, Vancouver, ISO, and other styles

34

Erdogan, Ahmet Yasin. "Analysis of the effects of phase noise and frequency offest in orthogonal frequency division multiplexing (OFDM) systems /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Mar%5FErdogan.pdf.

Full text

Abstract:

Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, March 2004.<br>Thesis advisor(s): Murali Tummala, Roberto Cristi. Includes bibliographical references (p. 127-129). Also available online.

APA, Harvard, Vancouver, ISO, and other styles

35

Holder, Sade A. "Linear frequency modulated signals vs orthogonal frequency division multiplexing signals for synthetic aperture radar systems." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/42647.

Full text

Abstract:

Approved for public release; distribution is unlimited<br>The goal of this thesis is to investigate the effects of an orthogonal frequency-division multiplexing (OFDM) signal versus a linear frequency modulated or chirp signal on simulated synthetic aperture radar (SAR) imagery. Various parameters of the transmitted signal, such as pulse duration, transmitted signal energy, bandwidth, and (specifically for the OFDM signal) number of subcarriers and transmission scheme were examined to determine which parameters are most important to reconstructing a SAR image. Matched filtering and interpolati

APA, Harvard, Vancouver, ISO, and other styles

36

Holguín-Sánchez, Fausto Daniel. "Spectral Shape Division Multiplexing (SSDM): Apparatus, Transmitter, Receiver and Detection." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/800.

Full text

Abstract:

Wireless communication companies require to use the frequency spectrum to operate. Both frequency licenses and infrastructure to reuse frequencies are costly resources subject to increasing demand. This work introduces a novel multiplexing method that saves spectrum called Spectral Shape Division Multiplexing (SSDM). Under certain configurations, SSDM displays higher flexibility and throughput than other spectrally efficient methods. SSDM defines the structure of a wireless multi-carrier by software. It is similar to Orthogonal Frequency Division Multiplexing (OFDM) in that both use overlapped

APA, Harvard, Vancouver, ISO, and other styles

37

Escayola, Elias Francesc Xavier. "Next generation passive optical networks based on orthogonal frequency division multiplexing techniques." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/334417.

Full text

Abstract:

In recent decades, the industry of communications has acquired huge significance, and nowadays constitutes an essential tool for the society information. Thus, the exponential growth in demand of broadband services and the increasing amount of information to be transmitted have spurred the evolution of the access network infrastructure to effectively meet the user needs in an effective way in terms of costs of both installation and maintenance. Passive optical networks (PON) are currently considered the most efficient and least costly alternative to deploy fiber to the home environment. In o

APA, Harvard, Vancouver, ISO, and other styles

38

Shenoy, Dinesh Nandakumar. "Compressive Sensing| Performance of Sparse Channel Estimation in Orthogonal Frequency Division Multiplexing." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10751778.

Full text

Abstract:

<p> Compressive Sensing is a signal processing technique that is based on the property that the sparsity concept of a given signal can be exploited to reconstruct the signal successfully while disobeying Shannon’s Nyquist Theorem with fewer samples than what is required. </p><p> Sparse estimation which is an application of Compressive Sensing is applied to an OFDM transmission, as the model provides a better performance along with controlled inter symbol interference (ISI). </p><p> The thesis is based on the assumption that a single OFDM block is essentially time invariant and the si

APA, Harvard, Vancouver, ISO, and other styles

39

Schedler, Stephan [Verfasser]. "Generalized Frequency Division Multiplexing in the Two-Way-Relay Channel / Stephan Schedler." Aachen : Shaker, 2016. http://d-nb.info/1120863880/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Craven, Michael P. "Inter-chip communications in an analogue neural network utilising frequency division multiplexing." Thesis, University of Nottingham, 1994. http://eprints.nottingham.ac.uk/13085/.

Full text

Abstract:

As advances have been made in semiconductor processing technology, the number of transistors on a chip has increased out of step with the number of input/output pins, which has introduced a communications ’bottle-neck’ in the design of computer architectures. This is a major issue in the hardware design of parallel structures implemented in either digital or analogue VLSI, and is particularly relevant to the design of neural networks which need to be highly interconnected. This work reviews hardware implementations of neural networks, with an emphasis on analogue implementations, and proposes

APA, Harvard, Vancouver, ISO, and other styles

41

Rajanna, Sowmya. "Orthogonal Frequency Division Multiplexing (OFDM) channel estimation using pilot based parametric scheme." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10011270.

Full text

Abstract:

<p>This paper is aimed at parametric Multiple Input Multiple Output (MIMO) ? Orthogonal Frequency Division Multiplexing (OFDM) channel estimation that increases the spectrum efficiency of the wireless communication systems. OFDM technology has been widely used due to its high data rate and low multipath distortion. The estimation of channel for OFDM is required in vehicular environments and many other cutting-edge technology applications. To develop such reliable vehicular wireless communication systems, it is necessary to set up the standards and models of propagation channel with respect to

APA, Harvard, Vancouver, ISO, and other styles

42

Sahmel, Peter H. "Eigenspace Approach to Specific Emitter Identification of Orthogonal Frequency Division Multiplexing Signals." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/35987.

Full text

Abstract:

Specific emitter identification is a technology used to uniquely identify a class of wireless devices, and in some cases a single device. Minute differences in the implementation of a wireless communication standard from one device manufacturer to another make it possi- ble to extract a wireless â fingerprintâ from the transmitted signal. These differences may stem from imperfect radio frequency (RF) components such as filters and power amplifiers. However, the problem of identifying a wireless device through analysis of these key signal characteristics presents several difficulties from an

APA, Harvard, Vancouver, ISO, and other styles

43

Du, Jinfeng. "Pulse Shape Adaptation and Channel Estimation in Generalised Frequency Division Multiplexing Systems." Licentiate thesis, Stockholm : Informations- och kommunikationsteknik, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9457.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Gemechu, Wasyhun Asefa. "Comparison of nonlinear frequency division multiplexing and OFDM for optical fiber transmissions." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT021/document.

Full text

Abstract:

La capacité ultime du canal dans les systèmes de transmission optique à longue distance est limitée par les effets non linéaires liés à la propagation dans les fibres optiques. Des techniques de compensation des effets non-linéaires, tel que la DBP (Digital Back Propagation), ont été proposées pour surmonter ces limitations et accroître la capacité. Compte tenu de leur complexité d’implémentation, leur gain en performance reste très limité. Cela a déclenché très récemment la recherche de nouvelles techniques de communication prenant en compte la non-linéarité de la fibre. Une nouvelle méthode

APA, Harvard, Vancouver, ISO, and other styles

45

Gemechu, Wasyhun Asefa. "Comparison of nonlinear frequency division multiplexing and OFDM for optical fiber transmissions." Electronic Thesis or Diss., Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT021.

Full text

Abstract:

La capacité ultime du canal dans les systèmes de transmission optique à longue distance est limitée par les effets non linéaires liés à la propagation dans les fibres optiques. Des techniques de compensation des effets non-linéaires, tel que la DBP (Digital Back Propagation), ont été proposées pour surmonter ces limitations et accroître la capacité. Compte tenu de leur complexité d’implémentation, leur gain en performance reste très limité. Cela a déclenché très récemment la recherche de nouvelles techniques de communication prenant en compte la non-linéarité de la fibre. Une nouvelle méthode

APA, Harvard, Vancouver, ISO, and other styles

46

Stinchcombe, Timothy Edward. "Aperiodic correlations of length 2'm sequences, complementarity and power control for OFDM." Thesis, Royal Holloway, University of London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325865.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Rodrigues, Miguel Raul Dias. "Modelling and performance assessment of OFDM communication systems in the presence of non-linearities." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268393.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Prasetyo, Bhimantoro Yudho. "Synchronisation in OFDM systems." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252282.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Leung, Edward Sau-Yee. "A successive interference cancelling receiver for orthogonal frequency division multiplexing in mobile communications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0019/MQ37576.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Yang, Runfeng. "Multiband orthogonal frequency division multiplexing modulation and demodulation for wireless universal serial bus." Thesis, University of Reading, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.499368.

Full text

Abstract:

Wireless Universal Serial Bus (W-USB) has been proposed to offer a mechanism in short range and high speed Wireless Personal Area Networks (WPAN). Wireless USB has now been standardized by utilizing the common WiMedia Ultra Wideband (UWB) radio platform to use the services of Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) as the transport mechanism. With regards to the high data rate mode using DCM modulation scheme, different DCM demapping methods resulting in different system performance are presented, which include soft bit demapping, Maximum Likelihood (ML) soft bit demappi

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!