Academic literature on the topic 'OFDM (Orthogonal Frequency Division Multiplexing)'

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Journal articles on the topic "OFDM (Orthogonal Frequency Division Multiplexing)"

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Junejo, Naveed Ur Rehman, Mariyam Sattar, Saifullah Adnan, Haixin Sun, Abuzar B. M. Adam, Ahmad Hassan, and Hamada Esmaiel. "A Survey on Physical Layer Techniques and Challenges in Underwater Communication Systems." Journal of Marine Science and Engineering 11, no. 4 (April 21, 2023): 885. http://dx.doi.org/10.3390/jmse11040885.

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In the past decades, researchers/scientists have paid attention to the physical layer of underwater communications (UWCs) due to a variety of scientific, military, and civil tasks completed beneath water. This includes numerous activities critical for communication, such as survey and monitoring of oceans, rescue, and response to disasters under the sea. Till the end of the last decade, many review articles addressing the history and survey of UWC have been published which were mostly focused on underwater sensor networks (UWSN), routing protocols, and underwater optical communication (UWOC). This paper provides an overview of underwater acoustic (UWA) physical layer techniques including cyclic prefix orthogonal frequency division multiplexing (CP-OFDM), zero padding orthogonal frequency division multiplexing (ZP-OFDM), time-domain synchronization orthogonal frequency division multiplexing (TDS-OFDM), multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM), generalized frequency division multiplexing (GFDM), unfiltered orthogonal frequency division multiplexing (UF-OFDM), continuous phase modulation orthogonal frequency division multiplexing (CPM-OFDM), filter bank multicarrier (FBMC) modulation, MIMO, spatial modulation technologies (SMTs), and orthogonal frequency division multiplexing index modulation (OFDM-IM). Additionally, this paper provides a comprehensive review of UWA channel modeling problems and challenges, such as transmission loss, propagation delay, signal-to-noise ratio (SNR) and distance, multipath effect, ambient noise effect, delay spread, Doppler effect modeling, Doppler shift estimation. Further, modern technologies of the physical layer of UWC have been discussed. This study also discusses the different modulation technology in terms of spectral efficiency, computational complexity, date rate, bit error rate (BER), and energy efficiency along with their merits and demerits.
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Uppal, Sabhyata, Sanjay Sharma, and Hardeep Singh. "Analytical Investigation on Papr Reduction in OFDM Systems Using Golay Codes." Journal of Electrical Engineering 65, no. 5 (September 1, 2014): 289–93. http://dx.doi.org/10.2478/jee-2014-0046.

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Abstract Orthogonal frequency division multiplexing (OFDM) is a common technique in multi carrier communications. One of the major issues in developing OFDM is the high peak to average power ratio (PAPR). Golay sequences have been introduced to construct 16-QAM and 256-QAM (quadrature amplitude modulation) code for the orthogonal frequency division multiplexing (OFDM), reducing the peak-to-average power ratio. In this paper we have considered the use of coding to reduce the peakto- average power ratio (PAPR) for orthogonal frequency division multiplexing (OFDM) systems. By using QPSK Golay sequences, 16 and 256 QAM sequences with low PAPR are generated
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Sun, Zeng You, and Fan Ming Zeng. "Optimization and Simulation of OFDM System Based on Orthogonal Wavelet." Applied Mechanics and Materials 548-549 (April 2014): 1221–26. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1221.

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In order to reduce the Orthogonal Frequency division Multiplexing (OFDM) Inter-Carrier Interference (ICI), Put forward a kind of modulation method that based on the orthogonal frequency division multiplexing of orthogonal wavelet, Using orthogonal wavelet instead of discrete Fourier transform, optimize the design for OFDM systems, on the premise of without protection interval to reduce the system interference, using MATLAB to simulate the OFDM system, results show that the optimization of the OFDM can reduce the power of the ICI and Inter-symbol Interference (ISI) and improve the comprehensive anti-jamming of the OFDM system.
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Yang, Jieying. "Orthogonal frequency division multiplexing technology based on MATLAB." Applied and Computational Engineering 6, no. 1 (June 14, 2023): 351–58. http://dx.doi.org/10.54254/2755-2721/6/20230807.

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The subcarriers of an orthogonal frequency division multiplexing (OFDM) system are not identical in the time domain, and their spectra also overlap. As a result, the spectrum is being used effectively. Its effective use of frequency resources and capacity to combat channel fading have made it the de facto technical standard. In wireless communication, numerous pathways in the channel can lead to interference between symbols, known as inter-symbol interference (ISI). This research supplements OFDM systems with some safeguards to eliminate inter-symbol interference. Most traditionally, OFDM symbols have had their post-event sample points duplicated to their beginnings, a process known as Cyclic prefix (CP) padding in the protection interval. In order to further counteract ISI, a protection interval might be added to the beginning of each symbol. An OFDM system's bit error rate (BER) can be decreased by using cyclic prefixes to attenuate inter-code interference. This study explains how OFDM and CP-OFDM work and compares their performance. The primary topic of this study is a contrast between OFDM and CP-OFDM concerning the performance metrics of average symbol error rate (BER) and signal spectrum diagram (PSD).
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Francis, Xavier, Babu S. Hari, A. Rajesh, and Basha SK Jameer. "Low Code Coding Approach for ofdm Systems Coded with the Progressive Transmission." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 9, no. 12 (October 30, 2020): 185–88. https://doi.org/10.35940/ijitee.L7962.1091220.

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Orthogonal Frequency Division Multiplexing (OFDM) offers several benefits such as flexible wrapping, mail sign interference, reduced complexity and more. The only way to match parallel channels is to have genetic diversity in multipath channels. Various coded of OFDM systems reported using some form of channel coding or pre-coding to improve system performance. The execution of irrational orthogonal frequency division multiplexing (OFDM) on blurred channels is usually better than introducing some coding. Various coding schemes for off-OFDM have been reported in the literature.
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Koti, Jayasudha, and Braj Kishore Mishra. "BER Performance Comparison of DCO-OFDM and Convolutional Coded DCO-OFDM in IM/DD Systems." International Journal of Electronics, Communications, and Measurement Engineering 8, no. 2 (July 2019): 26–39. http://dx.doi.org/10.4018/ijecme.2019070102.

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Optical wireless communication (OWC) is an alternative technology to meet the demands of the exponentially-growing high data rate applications run by broadband users. The implementation of single carrier modulation techniques in OWC is an age old technology, but for the last few years research is focused towards the multicarrier modulation techniques in OWC. In OWC, information is carried using intensity modulation and retrieved using direct detection. To perform intensity modulation, the baseband signal should be a unipolar signal. To obtain a unipolar signal, various techniques such as DC-biased orthogonal frequency division multiplexing (DCO-OFDM), Asymmetrically clipped orthogonal frequency division multiplexing (ACO-OFDM), Flip orthogonal frequency division multiplexing (Flip-OFDM) and Unipolar orthogonal frequency division multiplexing (U-OFDM) techniques are reported in the literature. Though the DCO-OFDM is spectrally efficient compared to other techniques it requires more power to achieve the targeted BER. In this article, a convolutional Coded DCO-OFDM (CDCO-OFDM) has been introduced by applying channel coding. A convolutional encoder and a hard-decision Viterbi decoder are considered in CDCO-OFDM. It has been observed that CDCO-OFDM requires less transmitted power than DCO-OFDM to attain the targeted BER. The performance of DCO-OFDM and CDCO-OFDM is evaluated for 4, 16, 64 QAM- 7dB and 13dB bias, in the presence of the additive white Gaussian noise (AWGN) channel. It is observed that CDCO requires less power to transmit than DCO-OFDM for the BER 10-4.
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Yang, Xianzhen, Siyuan Yan, Xiao Li, and Fu Li. "A Unified Spectrum Formulation for OFDM, FBMC, and F-OFDM." Electronics 9, no. 8 (August 11, 2020): 1285. http://dx.doi.org/10.3390/electronics9081285.

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Although orthogonal frequency division multiplexing (OFDM) has been standardized for 5G, filter bank multi-carrier (FBMC) and filtered orthogonal frequency division multiplexing (F-OFDM) remain competitive as candidates for future generations of wireless technologies beyond 5G, due to their reduced spectrum leakage and thus enhanced spectrum efficiency. In this article, we developed a unified spectrum expression for OFDM, FBMC, and F-OFDM, which provides comparative insights into those techniques. A representative sideband quantification is included at the end of this article.
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Chen, Jiamin, Chen Chen, Zhihong Zeng, Min Liu, Jia Ye, Cuiwei He, Shenjie Huang, H. Y. Fu, and Harald Haas. "Orthogonal Frequency Division Diversity and Multiplexing for 6G OWC: Principle and Underwater Use Case." Photonics 11, no. 11 (November 8, 2024): 1051. http://dx.doi.org/10.3390/photonics11111051.

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In this paper, we, for the first time, propose and demonstrate an orthogonal frequency division diversity and multiplexing (OFDDM) scheme for the sixth-generation (6G) underwater optical wireless communication (UOWC) systems. In OFDDM, the subcarriers are grouped into subblocks; the subcarriers within each subblock transmit the same constellation symbol through diversity transmission, while different subblocks transmit different constellation symbols via multiplexing transmission. As a result, OFDDM can support hybrid diversity and multiplexing transmission simultaneously. Moreover, the combination of subblock interleaving and low-complexity diversity is further proposed to efficiently mitigate the adverse low-pass effect and substantially reduce the computational complexity, respectively. The feasibility of OFDDM adapting to the various transmission conditions in UOWC systems has been verified via both simulations and experiments. Experimental results demonstrate that a striking 106.1% effective bandwidth extension can be obtained using OFDDM in comparison to conventional orthogonal frequency division multiplexing (OFDM) for a fixed spectral efficiency of 1 bit/s/Hz. Furthermore, OFDDM with adaptive bit loading can also gain a remarkable 13.3% capacity improvement compared with conventional OFDM with adaptive bit loading.
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Yan, Hua. "Orthogonal Frequency Division Multiplexing: Status, Challenges and Directions." Applied and Computational Engineering 134, no. 1 (February 21, 2025): 99–108. https://doi.org/10.54254/2755-2721/2025.20930.

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With the convergence of communication and radar technologies, Integrated Sensing and Communication (ISAC) is expected to be a pivotal focus area for future 6G networks. Orthogonal Frequency Division Multiplexing (OFDM) technology plays a crucial role in enabling ISAC. This paper examines the fundamental principles of OFDM, its applications in terahertz ISAC systems, related advancements such as Orthogonal Time Frequency Space (OTFS), and its potential integration into future air-space-ground networks. While OFDM technology demonstrates significant promise, it also presents several challenges. To address these, researchers have proposed various enhancement strategies. This study offers valuable insights to guide the future development of OFDM technology.
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Neha, Therkar* Rohit Rathor. "A TECHNICAL REVIEW OF PEAK TO AVERAGE POWER RATIO REDUCTION IN MIMO-OFDM." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 9 (September 25, 2016): 747–51. https://doi.org/10.5281/zenodo.155105.

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In this paper, detailed review of bit error rate (BER) and peak to average power ratio (PAPR) reduction in multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) and performance analysis of OFDM in various channel is given. This paper will contribute in better choices of technical methods to reduce bit error rate and the peak to average power ratio in orthogonal frequency division multiplexing for high speed wireless communication. One major shortcoming of OFDM is the high peak-to average Power ratio (PAPR). Most investigated techniques modified are Selected Mapping (SLM) and Companding scheme (CS).These are PAPR reduction techniques for multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) without affecting the Bandwidth proficiency of the system and the Bit Error Rate (BER) performance. This is one of the strongest candidates for Future 5-G LTE wireless communication.
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Dissertations / Theses on the topic "OFDM (Orthogonal Frequency Division Multiplexing)"

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

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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 feedback. For inter-channel interference suppression, a frequency domain partial response coding (PRC) scheme is proposed to mitigate ICI. We derive the near-optimal weights for PRC that is independent on the channel power spectrum. The error floor resulting from ICI can be reduced significantly using a two-tap or a three-tap PRC. Clustered OFDM is a new technique that has many advantages over traditional OFDM. In clustered OFDM systems, adaptive antenna arrays are used for interference suppression. To calculate weights for interference suppression, we propose a polynomial-based parameter estimator to combat the severe leakage of the DFT based estimator due to the small size of the cluster. An adaptive algorithm is developed to obtain optimal performance. For high data rate military communications, we propose a clustered OFDM base spread spectrum modulation to provide both anti-jamming and fading suppression capability. We analyze the performance of uncoded and coded system. Employing multiple transmit and receive antennas in OFDM systems (MIMO-OFDM) can increase the spectral efficiency and link reliability. We develop a minimum mean-square-error (MMSE) channel estimator that takes advantage of the spatial-frequency correlations in MIMO-OFDM systems to minimize the estimation error. We investigate the training sequence design and two optimal training sequence designs are given for arbitrary spatial correlations. For a MIMO system, the diversity and array gains can be obtained by exploiting channel information at the transmitter. For MIMO-OFDM systems, we propose a subspace tracking based approach that can exploit the frequency correlations of the OFDM system to reduce the feedback rate. The proposed approach does not need recalculate the precoding matrix and is robust to multiple data stream transmission.
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Recio, Adolfo Leon. "Spectrum-Aware Orthogonal Frequency Division Multiplexing." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/30193.

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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 challenges in the communications and the computing fields that are addressed to optimally utilize the capacity of opportunistically allocated spectrum bands. FPGA implementations of parameterizable OFDM and filter bank multi-carrier (FBMC) radio prototypes with spectrum awareness and non-contiguous sub-carrier allocation were completed and tested over-the-air. Sub-carrier sparseness assumptions were validated under practical implementation and performance considerations. A novel algorithm for frame detection and synchronization with mutual interference rejection applicable to the FBMC case was proposed and tested.<br>Ph. D.
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Challakere, Nagaravind. "Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1423.

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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 computation tractable. A modified gradient function based on the MSER objective is developed which provides better performance characteristics than the ML-based estimator. The estimates produced by the MSER approach exhibit lower Mean Squared Error compared to the ML benchmark. The performance of MSER-based estimator is simulated with Quaternary Phase Shift Keying (QPSK) symbols, but the algorithm presented is applicable to all complex symbol constellations.
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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/.

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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 com sucesso há alguns anos. Diversas simulações foram executadas comparando o método tradicional de recepção do sistema DVB-T com a versão equalizada proposta. Foram utilizadas várias técnicas de processamento digital de sinais para simular: a geração do sinal, sua passagem por um canal de comunicação com multipercurso, presença de ruído branco Gaussiano aditivo, equalização LMS (Least Mean Square), entre outros fenômenos importantes. Para um firme embasamento, o trabalho apresenta estudos matemáticos sobre a teoria geral do OFDM, modelos de canais de comunicação e o princípio básico do algoritmo LMS. Tendo-se utilizado o DVB-T como estudo de caso prático, não poderia deixar de constar uma descrição técnica desse sistema em que são apresentados vários dos detalhes e problemas envolvidos na geração e recepção do sinal. Com a finalidade de posicionar o leitor histórica e tecnologicamente, o texto inclui ainda uma revisão dos principais fatos que marcaram o desenvolvimento do OFDM desde os estudos iniciais até os dias de hoje.<br>This dissertation deals with time-domain equalization of digital communications systems based on orthoghonal frequency-division multiplexing (OFDM), usually referred as pre-FFT equalization in the technical literature. Such systems were originally designed to require no time equalization but can profit from its use, as is shown in this work. An uncoded simulator of the OFDM-based European system for terrestrial digital television transmission, the digital video broadcasting (DVB-T), was implemented in software. Many simulations were run to compare the performance of the traditional DVB-T reception method with the equalized version proposed. Several digital signal processing techniques were used to simulate as diverse fenomena as: generation of the source signal, effect of multipath communications channels, presence of additive white Gaussian noise, LMS (Least Mean Square) equalization, among others. In order to develop a solid base, the work includes mathematical studies about the general OFDM theory, models of communications channels and the basic principle of operation of the LMS algorithm. Since the DVB-T was used as a practical study case, a technical description of the system is presented, in which many problems and aspects about its generation and reception are discussed. To provide the reader with a historical and technological insight on the subject, this work also includes a summary of the landmarks in the development of the OFDM since the first experiments.
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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/.

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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 modulation scheme, whereas for complex modulation schemes, the performance of Fast-OFDM degrades severely due to the loss of orthogonality between subcarriers. Two multi-carrier CDMA schemes, multi-carrier direct sequence CDMA (MC DS-CDMA) and multi-tone CDMA (MT-CDMA), have been studied in different modulation scenarios. The performance of the overlapping multi-carrier CDMA schemes compared to OFDM and Fast-OFDM has been evaluated in terms of BER, spectral efficiency, PAPR and ACI analysis. The results reveal that the overlapping multi-carrier CDMA systems are comparable to the Fast-OFDM system under single user condition. It is thus feasible to apply multi-carrier CDMA detection techniques in Fast-OFOM systems. Therefore, two different types of linear detectors, zero-forcing (ZF) and minimum mean square error (MMSE) have been employed in complex modulated Fast-OFDM, leading to improvement of system performance. Overall, the theoretical design and performance assessment issues addressed in this thesis provide an insight into the performance of Fast-OFDM in the presence of additive white Gaussian noise (AWGN). The results obtained can be used by receiver designers for improving signal recovery of complex modulated Fast-OFDM in future wireless communication systems.
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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.

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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.

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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.

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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.

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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 theoretical and simulation results are in good agreement. As the constellation size increases, the improvement in BER performance decreases. The research then treats the impact of atmospheric turbulence on the performance of both conventional ACO-OFDM and the proposed MACO-OFDM system. A Single Input Multiple Output (SIMO) approach using multiple receivers is employed to mitigate the impact of atmospheric turbulence. The performance of MACO-OFDM outperforms that of ACO-OFDM by nearly 3 dB, 4 dB, and 5 dB as the number of receiving apertures (nRx) increases as 1, 2, and 4 respectively in weak atmospheric turbulence; in moderate turbulence the performance is improved by 2 dB, and 4.5 dB for nRx=2, and nRx=4; and in strong turbulence, the BER performance is enhanced by nearly 2 dB and 4 dB for nRx=2 and nRx=4. The channel capacity of MACO-OFDM has been shown to be half that of conventional ACO-OFDM. The capacity of SIMO MACO-OFDM architecture in atmospheric turbulent channel is evaluated.
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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.

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Books on the topic "OFDM (Orthogonal Frequency Division Multiplexing)"

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Ramjee, Prasad, ed. OFDM wireless multimedia communications. Boston: Artech House, 2000.

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Wenk, Markus. MIMO-OFDM testbed: Challenges, implementations, and measurement results. Konstanz: Hartung-Gorre, 2010.

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Arijon, Ignacio M. Performance of an orthogonal frequency division multiplexing (OFDM) system in frequency selective channels. Manchester: University of Manchester, 1996.

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Perels, Christop David. Frame-based MIMO-OFDM systems: Impairment estimation and compensation. Konstanz: Hartung-Gorre, 2008.

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Yŏnʼguwŏn, Hanʼguk Chŏnja Tʻongsin, ред. OFDM chŏnsong pangsik esŏŭi tongil chʻaenŏl RF chunggye kisul e kwanhan yŏnʼgu =: A study on the development of on-channel RF repeating technology based on OFDM modulation. [Seoul]: Chisik Kyŏngjebu, 2008.

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Yŏnʼguwŏn, Hanʼguk Chŏnja Tʻongsin, ред. OFDM chŏnsong pangsik esŏŭi tongil chʻaenŏl RF chunggye kisul e kwanhan yŏnʼgu =: A study on the development of on-channel RF repeating technology based on OFDM modulation. [Seoul]: Chisik Kyŏngjebu, 2008.

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Marc, Engels, ed. Wireless OFDM systems: How to make them work? Boston: Kluwer Academic Publishers, 2002.

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Bader, Faouzi, and Nizar Zorba. Advances on processing for multiple carrier schemes: OFDM & OFDMA. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Engels, Marc. Wireless OFDM systems: How to make them work? Boston: Kluwer Academic Publishers, 2002.

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Häne, Simon. VLSI circuits for MIMO-OFDM physical layer. Konstanz: Hartung-Gorre, 2008.

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Book chapters on the topic "OFDM (Orthogonal Frequency Division Multiplexing)"

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Hu, Bin, Muhammad Irshad, Sohail M. Noman, Xilang Tang, Chen Song, and Sami Ahmed Haider. "Design and Simulation of Orthogonal Frequency-Division Multiplexing (OFDM) Signaling." In 3D Imaging Technologies—Multidimensional Signal Processing and Deep Learning, 187–97. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3180-1_24.

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Adnan, Nur Qamarina Muhammad, Aeizaal Azman Abdul Wahab, Syed Sahal Nazli Alhady, and Wan Amir Fuad Wajdi. "Comparison of Different Data Detection Methods in Orthogonal Frequency Division Multiplexing (OFDM) System." In Proceedings of the 12th International Conference on Robotics, Vision, Signal Processing and Power Applications, 303–9. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9005-4_38.

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Pavan Kumar Reddy, Y., Y. Sunanda, T. Uday Kiran, M. Venkata Sadvika, and K. Shankar. "Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM) in Underwater Optical Communication." In Cognitive Science and Technology, 837–49. Singapore: Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-97-9262-7_72.

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Rajanandhini, C., and S. P. K. Babu. "Comparison on Carrier Frequency Offset Estimation in Multi Band Orthogonal Frequency Division Multiplexing (OFDM) System." In Innovative Data Communication Technologies and Application, 551–60. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38040-3_62.

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Mura, Silvia. "Optimized ISAC Waveform Design in 6G Networks." In SpringerBriefs in Applied Sciences and Technology, 121–30. Cham: Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-80268-3_12.

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Abstract Sixth-generation (6G) wireless networks introduce Integrated Sensing and Communication (ISAC) technology, enabling simultaneous communication and sensing through shared time, frequency, space, and energy resources. Designing ISAC waveforms is challenging due to the need to satisfy both high-capacity communication and accurate sensing. This work presents a dual-domain waveform design that integrates classical Orthogonal Frequency Division Multiplexing (OFDM) with a tailored sensing signal in the delay-Doppler domain with carefully adjusted power to enhance sensing resolution without significantly affecting communication rate. Moreover, the paper tackles practical challenges such as high sidelobes and decreased sensing accuracy due to underutilized frequency-time resources. To address these issues, optimal resource allocation over time, frequency, and energy is defined, along with a novel interpolation technique based on Schatten p quasi-norm matrix completion. Numerical results show that these approaches outperform current methods, demonstrating the potential for improving 6G networks.
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Atarashi, Hiroyuki, and Mamoru Sawahashi. "Variable Spreading Factor Orthogonal Frequency and Code Division Multiplexing (VSF-OFCDM)." In Multi-Carrier Spread-Spectrum & Related Topics, 113–22. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-3569-7_11.

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Jiang, Chunbo. "Performance Analysis of 10 Gbit/s Optical Orthogonal Frequency Division Multiplexing (OFDM) Signal Transmission System Over Multimode Fiber." In Electrical, Information Engineering and Mechatronics 2011, 1455–61. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2467-2_173.

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Al-Awadi, Adnan Ali Kadhim, and Husam Noaman Mohamed Ali. "Enhancement Optical Fiber Data Rate by Using 8 Port Dense Wide Division Multiplexing OF 256- Quadrature Amplitude Modulation (QAM) and Orthogonal Frequency Division Multiplexing (OFDM) Dual Polarization Technique." In Communications in Computer and Information Science, 97–116. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72287-5_6.

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Abera, Workineh Gebeye. "Comparative Study of the Performances of Peak-to-Average Power Ratio (PAPR) Reduction Techniques for Orthogonal Frequency Division Multiplexing (OFDM) Signals." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 56–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95153-9_6.

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Hara, Shinsuke. "Orthogonal Frequency Division Multiplexing." In Handbook of Computer Networks, 591–605. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118256053.ch39.

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Conference papers on the topic "OFDM (Orthogonal Frequency Division Multiplexing)"

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Kohno, Wataru, Jian Fang, Shuji Murakami, Giovanni Milione, and Ting Wang. "Underwater Acoustic OFDM Transmission over Optical Fiber with Distributed Acoustic Sensing." In Optical Fiber Communication Conference, Th2A.24. Washington, D.C.: Optica Publishing Group, 2025. https://doi.org/10.1364/ofc.2025.th2a.24.

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We demonstrate fiber-optic acoustic data transmission using distributed acous-tic sensing technology in an underwater environment. An acoustic orthogonal frequency-division multiplexing (OFDM) signal transmitted through a fiber-optic cable deployed in a standard 40-meter-scale underwater testbed.
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Pasya, Idnin, and Megat Syahirul Amin Megat Ali. "Evaluation of a Deep Learning-based Orthogonal Frequency Division Multiplexing (OFDM) Scheme for Undersea RF Communication." In 2024 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), 47–50. IEEE, 2024. https://doi.org/10.1109/apace62360.2024.10877407.

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Chen, Hao, Yanrui Wang, Lilin Dan, Juan Zhang, and Yue Xiao. "Constant Envelope Orthogonal Frequency-Division Multiplexing with Selective Mapping." In 2024 IEEE SENSORS, 1–4. IEEE, 2024. https://doi.org/10.1109/sensors60989.2024.10784976.

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Chen, Jiamin, Chen Chen, Cuiwei He, and Min Liu. "Orthogonal Frequency Division Diversity and Multiplexing for Optical Communications." In 2024 IEEE Opto-Electronics and Communications Conference (OECC), 1–3. IEEE, 2024. https://doi.org/10.1109/oecc54135.2024.10975709.

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Kabir, Waziha. "Orthogonal Frequency Division Multiplexing (OFDM)." In 2008 China-Japan Joint Microwave Conference (CJMW 2008). IEEE, 2008. http://dx.doi.org/10.1109/cjmw.2008.4772401.

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Kabir, W. "Orthogonal frequency division multiplexing (OFDM)." In China-Ireland International Conference on Information and Communications Technologies (CIICT 2008). IEE, 2008. http://dx.doi.org/10.1049/cp:20080773.

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Jian, Yin-He, Chih-Chun Wang, Tzu-Chieh Wei, Ying-Kai Hong, Huang-Ming Chen, Chi-Wai Chow, Yang Liu, and Chien-Hung Yeh. "Optical Beam Steerable and Flexible Data Rate Orthogonal Frequency Division Multiplexing Non-Orthogonal Multiple Access (OFDM-NOMA) Visible Light Communication." In Optical Fiber Communication Conference. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ofc.2023.m4f.3.

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We propose and demonstrate visible-light-communication (VLC) system using spatial-light-modulator (SLM) and orthogonal-frequency-division-multiplexing non-orthogonal-multiple access (OFDM-NOMA), illustrating the flexibilities of optical-beam steering and data-rate allocation for multiple users.
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Kuang, Yujun, Can Long, Keping Long, Jingsen Huang, Chaofeng Wu, and Qianbin Chen. "Pseudo-orthogonal Carrier Interference Orthogonal Frequency Division Multiplexing (PO-CI/OFDM) Revisited." In COIN-NGNCON 2006 - The Joint International Conference on Optical Internet and Next Generation Network. IEEE, 2006. http://dx.doi.org/10.1109/coinngncon.2006.4454680.

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Suma, M. N., and B. Kanmani. "Developments in orthogonal frequency division multiplexing (OFDM) system-a survey." In 2011 Second Asian Himalayas International Conference on Internet (AH-ICI). IEEE, 2011. http://dx.doi.org/10.1109/ahici.2011.6113955.

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Tsonev, Dobroslav, Sinan Sinanovic, and Harald Haas. "Novel Unipolar Orthogonal Frequency Division Multiplexing (U-OFDM) for Optical Wireless." In 2012 IEEE Vehicular Technology Conference (VTC 2012-Spring). IEEE, 2012. http://dx.doi.org/10.1109/vetecs.2012.6240060.

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Reports on the topic "OFDM (Orthogonal Frequency Division Multiplexing)"

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Hufford, George. Orthogonal frequency division multiplexing: An application to high definition television. Boulder, CO: Institute for Telecommunication Sciences, August 1994. https://doi.org/10.70220/x35cqj09.

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