Relevant bibliographies by topics / PAPR (Peak to Average Power Ratio)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'PAPR (Peak to Average Power Ratio)'

Author: Grafiati
Published: 9 September 2021
Last updated: 1 February 2022

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Journal articles on the topic "PAPR (Peak to Average Power Ratio)"

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Wirastuti, N. M. A. E. D. "Understanding Peak Average Power Ratio in VFFT-OFDM Systems." Applied Mechanics and Materials 776 (July 2015): 419–24. http://dx.doi.org/10.4028/www.scientific.net/amm.776.419.

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This paper describes an impairment commonly encountered in an OFDM system that must be considered in the design that is peak average power ratio (PAPR). In these studies, a statistical approach to analysing PAPR is suggested. The PAPR statistics of OFDM and VFFT-OFDM are studied by simulation of the statistical distribution of the quantity that is the Complementary Cumulative Distribution Function (CCDF) of the PAPR. The simulation results show that the simulated CCDF of PAPR, the 1% PAPR of OFDM is about 11.40 dB, whereas for VFFT-OFDM this rises to less than 3% of the time. Simulations show that by employing VFFT in OFDM system results in a 0.55 dB deterioration in the PAPR 1% of time.
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Bhukra, Ms Sonia. "Peak to Average Power Ratio (PAPR) Reduction in OFDM." International Journal for Research in Applied Science and Engineering Technology 7, no. 8 (August 31, 2019): 510–15. http://dx.doi.org/10.22214/ijraset.2019.8072.

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Zhu, Xiao Long. "Research on Suppression Technology of OFDM Peak-to-Average Power Ratio." Applied Mechanics and Materials 160 (March 2012): 154–58. http://dx.doi.org/10.4028/www.scientific.net/amm.160.154.

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OFDM has a high peak to average power ratio ( PAPR ), when the signal PAPR over power amplifier ( HPA ) linear dynamic range, will introduce nonlinear distortion, affecting the signal transmission performance. In order to overcome the defects, OFDM need to adopt the corresponding PAPR suppression technique, the signal amplitude changes of power amplifiers in the allowable range. This paper presents a new partial transmit sequence algorithm ( PTS ), double phase sequence reversal threshold algorithm, and simulation results show that the new algorithm on the PAPR suppression effectiveness, search depth of T, the inhibition on PAPR performance.
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Tabassum, Saadia, Sajjad Hussain, and Abdul Ghafoor. "Peak to Average Power Ratio Reduction in NC–OFDM Systems." Journal of Electrical Engineering 66, no. 3 (May 1, 2015): 154–58. http://dx.doi.org/10.2478/jee-2015-0024.

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Abstract Non contiguous orthogonal frequency division multiplexing (NC-OFDM) is an efficient and adaptable multicarrier modulation scheme to be used in cognitive radio communications. However like OFDM, NC-OFDM also suffers from the main drawback of high peak to average power ratio (PAPR). In this paper PAPR has been reduced by employing three different trigonometric transforms. Discrete cosine transform (DCT), discrete sine transform (DST) and fractional fourier transform (FRFT) has been combined with conventional selected level mapping (SLM) technique to reduce the PAPR of both OFDM and NC-OFDM based systems. The method combines all the transforms with SLM in different ways. Transforms DCT, DST and FRFT have been applied before the SLM block or inside the SLM block before IFFT. Simulation results show the comparative analysis of all the transforms using SLM in case of both OFDM and NC-OFDM based systems.
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Fang, Hao, and Wan Hua Wei. "Research on Peak-to-Average Power Ratio for OFDM System." Advanced Materials Research 823 (October 2013): 366–69. http://dx.doi.org/10.4028/www.scientific.net/amr.823.366.

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OFDM is a special multi-carrier modulation, its basic idea is to make high-speed transmission of data flow through the serial-parallel conversion and make it to be the low-speed transmission of data flow in a number of narrow-band orthogonal sub-channels. However, a major drawback of OFDM signals is their high Peak-to-Average Power Ratio (PAPR), which makes the inter modulation distortion occur due to the nonlinearity of the high power amplifier. The distortion severely deteriorates the performance of the OFDM systems. According the problems mentioned above, this dissertation focuses on the reducing the PAPR algorithms design for OFDM systems, such as SLM and PTS. In summary, this paper has completed the OFDM system simulation with Matlab and analyses the result.
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Zhang, Rui, and Zhi Bin Zeng. "Simulation on PAPR Suppression Algorithm for Multicarrier System." Applied Mechanics and Materials 596 (July 2014): 794–98. http://dx.doi.org/10.4028/www.scientific.net/amm.596.794.

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The main disadvantage of multicarrier system is the high peak-to-average power ratio which can easily result in significant cut-the-top distortion of power amplifier. However, the power efficiency of power amplifier will be reduced by power back-off technology. Therefore, crest factor reduction is important in reducing the peak-to-average power ratio of multicarrier system and improving the efficiency of power amplifier. The peak-to-average power ratio can be effectively reduced with small distortion by the algorithm of crest factor reduction based on peak cancellation. And the performance of peak-to-average power ratio is better with the same error vector magnitude.
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Yu, Bing Yan, and Hong Ming Zhang. "Peak-to-Average Power Ratio Distribution of OFDM Visible Light Communication Systems." Applied Mechanics and Materials 519-520 (February 2014): 987–90. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.987.

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This paper studies the Peak-to-Average Power Ratio (PAPR) distribution in orthogonal frequency division multiplexing (OFDM) signal of visible light communication (VLC) systems with intensity modulation direct detection (IM/DD). In this paper, a closed form expression of PAPR distribution in OFDM-VLC signals is derived, with unequal power allocation to subcarriers is considered. Simulation with different number of subcarriers is conducted. The numerical results show the proposed distribution expression matches well with the result obtained by simulation.
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Das, Diptadeep. "Peak to Average Power Ratio Reduction in OFDM Using Pulse Shaping Technique." Computer Engineering and Applications Journal 5, no. 2 (June 23, 2016): 57–64. http://dx.doi.org/10.18495/comengapp.v5i2.169.

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Orthogonal Frequency Division Multiplexing (OFDM) is a special type of multicarrier modulation in which a signal is split into several narrowband channels at different frequencies. Here data is divided into parallel data streams each transmitted on a separate band. One of the major drawbacks of multicarrier transmission is the high peak-to-average power ratio (PAPR) of the transmit signal. Nyquist filters provide ISI-free transmission. In this paper we are going to propose some new filters which can formulated in an effort to reduce the peak-to-average power ratio (PAPR) of the baseband signal. While maintaining the same excess bandwidth and the zero inter-symbol interference condition. The proposed filters contain various parameters which gives an additional degree of freedom to minimize PAPR for a given roll-off factor α .
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Franczyk, Anna, Andrzej Leśniak, and Damian Gwiżdż. "Time reversal seismic source imaging using peak average power ratio (PAPR) parameter." Acta Geophysica 65, no. 2 (March 7, 2017): 299–308. http://dx.doi.org/10.1007/s11600-017-0022-0.

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Rathore, Hemant, and Arun Kumar. "Reduction of Peak Average Power Ratio for FBMC Waveform with P-PTS Technique." International Journal of Sensors, Wireless Communications and Control 10, no. 1 (February 7, 2020): 47–54. http://dx.doi.org/10.2174/2210327909666190207155619.

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Background: In this work, Peak Average Power Ratio (PAPR) reduction is achieved in Filter Bank Multi-Carrier (FBMC) by using a Pretreated Partial Transmit Sequence (P-PTS) technique. High PAPR is seen as unitary of the major problems in FBMC. Aim: The proposed work present a double stage optimization technique termed P-PTS. Methods: In the first step, several overlying signals cooperative optimization method that the phase angle sequences of current signal is intended and improved according to preceding overlapped signals. An efficient PTS scheme for PAPR reduction is put through in the second form. Results: The suggested technique is carried out by changing the value of U and V to analyze the BER and PAPR performance of the system. It is likewise noted that increasing the value of V can significantly lessen the peak power. Conclusion: Simulation results reveal that the performance of the proposed P-PTS technique is better than conventional PAPR reduction techniques with simple computations and the design complication can be traded off further compliantly with PAPR diminution.
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Dissertations / Theses on the topic "PAPR (Peak to Average Power Ratio)"

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Ishaq, Muhammad Irfan, Yasir Ali Khan, and Muhammad Talha Gul. "Precoding in MIMO, OFDM to reduce PAPR (Peak to Average Power Ratio)." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-18621.

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One of the critical issues of systems utilizing Orthogonal Frequency Division Multiplexing (OFDM) is the high peak to the average power ratio of OFDM signals. We have used Precoding as a way to mitigate the PAPR problem. Furthermore the performance of Precoded OFDM in fading multi-path channels has been studied. This thesis is based on an efficient technique for reducing the PAPR of OFDM signals. The proposed technique is data-independent and thus, does not require new processing and optimization for each transmitted OFDM block. The reduction in PAPR of the OFDM signal is obtained through a proper selection of a Precoding scheme that distributes the power of each modulated symbol over the OFDM block. The obtained results show that this Precoding scheme is an attractive solution to the PAPR problem of OFDM signals.
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Hussain, Sajjad. "PEAK TO AVERAGE POWER RATIO ANALYSIS AND REDUCTION OF COGNITIVE RADIO SIGNALS." Phd thesis, Université Rennes 1, 2009. http://tel.archives-ouvertes.fr/tel-00426930.

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* La multiplication des standards de télécommunications fait apparaître la nécessité de disposer de terminaux multistandard et reconfigurables. Ces nouvelles fonctionnalités trouvent leurs réponses dans le domaine de la radio logicielle. De tels terminaux ne sont pas encore réalisables pour des raisons technologiques liées à la complexité nécessaire à leur réalisation (convertisseurs ultra rapides, processeurs reconfigurables, antennes et amplificateurs très large bande, ....). En se basant alors sur une véritable technologie radio logicielle, la radio intelligente va encore plus loin dans la prospective en dotant le terminal de capteurs qui lui permettront de s'adapter et de réagir vis à vis de son environnement. La radio devient alors décentralisée et flexible se détachant de la notion de standards et transmettant de façon opportuniste une communication dans une bande qui aura été détectée comme libre. Cette présentation s'inscrit dans le contexte présenté ci-dessus en se focalisant sur les conséquences de l'amplification de puissance d'un signal multistandard. En effet, l'amplication de puissance est un étage fondamental de tout système radio et certaines précautions doivent être prises avant d'amplifier un signal. En effet, les amplificateurs ont des caractéristiques non linéaires et de faibles rendements nécessitant un traitement du signal à amplifier afin de limiter d'une part les distorsions non linéaires et d'autre part la consommation des terminaux. Les signaux caractérisant les systèmes multistandard ayant des caractéristiques proches de celle d'un signal OFDM (connu pour les problèmes liés à l'amplification de puissance), ce travail apporte des réponses sur : * les niveaux de puissance d'un signal multistandard * les méthodes à développer pour en minimiser les fluctuations de puissance * les conséquences de l'accès opportuniste au spectre sur les fluctuations de puissance dans un contexte de radio intelligente
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Kwak, Yongjun. "Near Shannon Limit and Reduced Peak to Average Power Ratio Channel Coded OFDM." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10176.

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Solutions to the problem of large peak to average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems are proposed. Although the design of PAPR reduction codewords has been extensively studied and the existence of asymptotically good codes with low PAPR has been proved, still no reduced PAPR capacity achieving code has been constructed. This is the topic of the current thesis.This goal is achieved by implementing a time-frequency turbo block coded OFDM. In this scheme, we design the frequency domain component code to have a PAPR bounded by a small number. The time domain component code is designed to obtain good performance while the decoding algorithm has reasonable complexity. Through comparative numerical evaluation we show that our method achieves considerable improvement in terms of PAPR with slight performance degradation compared to capacity achieving codes with similar block lengths. For the frequency domain component code, we used the realization of Golay sequences as cosets of the fi rst order Reed-Muller code and the modi cation of dual BCH code. A simple MAP decoding algorithm for the modi ed dual BCH code is also provided. Finally, we provide a flexible and practical scheme based on probabilistic approach to a PAPR problem. This approach decreases the PAPR without any signi cant performance loss and without any adverse impact or required change to the system.
Engineering and Applied Sciences
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Mazin, Asim Mohamed. "REDUCING THE PEAK TO AVERAGE POWER RATIO OF MIMO-OFDM USING Particle SWARM OPTIMIZATION BASED PTS." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1130.

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Asim M. Mazin, for the Master of Science degree in Electrical and Computer Engineering, presented on Mar 27, 2013, at Southern Illinois University Carbondale. TITLE: REDUCING THE PEAK TO AVERAGE POWER RATIO OF MIMO-OFDM USING PSO BASED PTS. MAJOR PROFESSOR: Dr. Garth V. Crosby, In this thesis we proposed PSO based PTS to accomplish the lowest Peak-to-Average Power Ratio of MIMO-OFDM system. We applied the PSO based PTS on each antenna of the system in order to find the optimal phase factors which is a straightforward method to get the minimum PAPR in such a system. The performance of PSO based PTS algorithm in MIMO-OFDM with a wide range of phase factor tends to give a high performance according to the simulation results. In addition, there is no need to increase the number of particles of the PSO algorithm to enhance the performance of the system, which keeps the complexity of finding the minimum PAPR reasonable.
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Luo, Jun. "Peak-to-Average Power Ratio Reduced Parallel Interference Cancellation Multicarrier-Code Division Multiple Access System with Anti-Interference Property." FIU Digital Commons, 2008. http://digitalcommons.fiu.edu/etd/20.

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Orthogonal Frequency-Division Multiplexing (OFDM) has been proved to be a promising technology that enables the transmission of higher data rate. Multicarrier Code-Division Multiple Access (MC-CDMA) is a transmission technique which combines the advantages of both OFDM and Code-Division Multiplexing Access (CDMA), so as to allow high transmission rates over severe time-dispersive multi-path channels without the need of a complex receiver implementation. Also MC-CDMA exploits frequency diversity via the different subcarriers, and therefore allows the high code rates systems to achieve good Bit Error Rate (BER) performances. Furthermore, the spreading in the frequency domain makes the time synchronization requirement much lower than traditional direct sequence CDMA schemes. There are still some problems when we use MC-CDMA. One is the high Peak-to-Average Power Ratio (PAPR) of the transmit signal. High PAPR leads to nonlinear distortion of the amplifier and results in inter-carrier self-interference plus out-of-band radiation. On the other hand, suppressing the Multiple Access Interference (MAI) is another crucial problem in the MC-CDMA system. Imperfect cross-correlation characteristics of the spreading codes and the multipath fading destroy the orthogonality among the users, and then cause MAI, which produces serious BER degradation in the system. Moreover, in uplink system the received signals at a base station are always asynchronous. This also destroys the orthogonality among the users, and hence, generates MAI which degrades the system performance. Besides those two problems, the interference should always be considered seriously for any communication system. In this dissertation, we design a novel MC-CDMA system, which has low PAPR and mitigated MAI. The new Semi-blind channel estimation and multi-user data detection based on Parallel Interference Cancellation (PIC) have been applied in the system. The Low Density Parity Codes (LDPC) has also been introduced into the system to improve the performance. Different interference models are analyzed in multi-carrier communication systems and then the effective interference suppression for MC-CDMA systems is employed in this dissertation. The experimental results indicate that our system not only significantly reduces the PAPR and MAI but also effectively suppresses the outside interference with low complexity. Finally, we present a practical cognitive application of the proposed system over the software defined radio platform.
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Baxley, Robert John. "Analyzing Selected Mapping for Peak-to-Average Power Reduction in OFDM." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6922.

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Orthogonal frequency division multiplexing (OFDM) has become a popular modulation method in high-speed wireless communications. By partitioning a wideband fading channel into flat narrowband channels, OFDM is able to mitigate the detrimental effects of multipath fading using a simple one-tap equalizer. However, in the time domain OFDM signals suffer from large envelope variations, which are often characterized by the peak-to-average ratio (PAR). High PAR signals, like OFDM, require that transmission amplifiers operate at very low power efficiencies to avoid clipping. In this thesis we review the most popular OFDM PAR-reduction techniques and demonstrate that selected mapping (SLM) is a particularly promising reduction technique. In a SLM system, an OFDM symbol is mapped to a set of quasi-independent equivalent symbols and then the lowest-PAR symbol is selected for transmission. The tradeoff for PAR reduction in SLM is computational complexity as each mapping requires an additional inverse fast fourier transform (IFFT) operation in the transmitter. In additional to an overview of current SLM work, we present a thorough analysis of SLM as well as several novel SLM proposals. First, we derive the closed-form expression for the expected PAR in an SLM system. The expected PAR can be thought of as a metric of PAR reduction capability. Second, we provide a power analysis of SLM to determine if the computational power costs outweigh the power saved through PAR reduction. Through this analysis, we show that SLM is capable of several Watts of net power savings when used in a wireless transmission system. Third, we propose that a PAR threshold should be set in SLM. Such thresholding leads to significant complexity decreases. Fourth, we derive the maximum likelihood (ML) and maximum extit{a posteriori} (MAP) detection metrics for blind SLM (BSLM) and threshold BSLM respectively. Lastly, we demonstrate that by using monomial phase sequences in SLM blind phase sequence detection is possible with a single FFT operation in the receiver.
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McCarthy, Stephen J. "Investigation of Power Reduction Methods for Multi-User MIMO WLAN Applications." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1416778581.

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Prieto, Alberto Pastor. "Simulation and evaluation of a DVB System using Simulink (Vol. II)." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2723.

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DVB (Digital Video Broadcasting) is the television digital system. It's however much more than a simple replacement for existing analogue television transmission, this system has many advantages such as picture quality and allows you a range of new features and services including subtitling, multiple audio tracks, interactive content, multimedia content.

The system is based in the OFDM technology, which allows DVB system to exploit the spectrum frequencies in a better way, saving spectrum, but OFDM has an important drawback that is the peak to average power ratio problem. OFDM is based on the FFT algorithms generating orthogonal subcarriers.

This thesis talks about the improvement of the PAPR problem using the soft compression method.

The simulation has been developed in Simulink® and Matlab®. With all the information presented in this thesis, any user can simulate the system. Thus, this thesis can be improved using other techniques to solve the PAPR problem.

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Bulusu, Sri Satish Krishna Chaitanya. "Performance Analysis and PAPR Reduction Techniques for Filter-Bank based Multi-Carrier Systems with Non-Linear Power Amplifiers." Thesis, Paris, CNAM, 2016. http://www.theses.fr/2016CNAM1042/document.

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Cette thèse a été effectuée dans le cadre du projet européen FP7 EMPHATIC (Enhanced Multicarrier Techniques for Professional Ad-Hoc and Cell-Based Communications). Plusieurs universités européennes et deux partenaires industriels: THALES Communications Security et CASSIDIAN ont participé à ce projet. L'objectif de ce projet est de développer, d'évaluer et de démontrer les apports des techniques multi-porteuses avancées, permettant une meilleure utilisation des bandes de fréquences radio existantes en fournissant des services de données à large bande, en coexistence avec les services traditionnels à bande étroite. Le projet porte sur l'application de radiocommunications mobiles professionnelles (Professional Mobile Radio : PMR). L'idée principale de ce projet est d'analyser la viabilité des systèmes à large bande utilisant des bancs de filtres (Filter Bank Multi Carrier : FBMC) conjointement avec une modulation d'amplitude en quadrature avec décalage (Offset Quadrature Amplitude Modulation : OQAM) dans le cadre de la 5ème génération (5G) des systèmes radio-mobiles. La modulation FBMC-OQAM se positionne comme candidate potentielle pour les futurs systèmes de communication. Cette modulation avancée offre de nombreux avantages tels que l’excellente localisation fréquentielle de sa densité spectrale de puissance (DSP), une robustesse au bruit de phase, aux décalages de fréquence ainsi qu’à l’asynchronisme entre les utilisateurs. Ces atouts, la rendent plus attrayant qu’OFDM pour l’application PMR, la radio cognitive (CR) et la 5G. Cependant, comme toute autre technique de modulation muti-porteuses, FBMC-OQAM souffre d’un facteur de crête ou d’un PAPR (pour Peak to Average Power Ratio) élevé. Lorsque l'amplificateur de puissance (AP), utilisé au niveau de l’émetteur, est opéré proche de sa zone non-linéaire (NL), ce qui est le cas dans la pratique, la bonne localisation fréquentielle de la DSP du système FBMC/OQAM est sérieusement compromise, en raison des remontées spectrales. Le premier objectif de cette thèse est de prédire l'étendue des remontées spectrales dans les systèmes FBMC-OQAM, introduites par la non-linéarité AP. Le deuxième objectif de ce travail est de proposer des techniques, pour les systèmes FBMC-OQAM, permettant la réduction du PAPR et la linéarisation de l’AP, afin d'atténuer les effets NL. L’utilisation des cumulants, a permis de prédire les remontées spectrales pour les signaux FBMC-OQAM après amplification NL. En outre, certains algorithmes de réduction du PAPR, basées sur des approches probabilistes et des techniques d'ajout de signaux, ont été proposés. La capacité de coexistence du système à large bande utilisant FBMC-OQAM avec des systèmes PMR à bande étroite en présence de PA a été analysée et il a été démontré que la coexistence est possible, à condition qu'il y est une bonne combinaison entre le recul du signal à l’entrée de l’AP (Input Back-Off : IBO), la réduction du PAPR et la linéarisation de l’AP. Enfin, une nouvelle technique de linéarisation de l’AP a été proposée pour le système FBMC-OQAM
This thesis is part of the European FP7 EMPHATIC project (Enhanced Multicarrier Techniques for Professional Ad-Hoc and Cell-Based Communications) including various European universities and two main industrial partners: THALES Communications Security and CASSIDIAN. The EMPHATIC objective is to develop, evaluate and demonstrate the capability of enhanced multi-carrier techniques to make better use of the existing radio frequency bands in providing broadband data services in coexistence with narrowband legacy services. The project addresses the Professional Mobile Radio (PMR) application. The main idea is to analyze the viability of broadband systems based on filter-bank multi-carrier (FBMC) clubbed with o ffset quadrature amplitude modulation (OQAM) in the context of the future 5th Generation (5G) radio access technology (RAT). Increasingly, the FBMC-OQAM systems are gaining appeal in the probe for advanced multi-carrier modulation (MCM) waveforms for future communication systems. This advanced modulation scheme o ers numerous advantages such as excellent frequency localization in its power spectral density (PSD), a robustness to phase noise, frequency off sets and also to the multi-user asynchronism; making it more appealing than OFDM for PMR, cognitive radio (CR) and 5G RAT. However, like any other MCM technique, FBMC-OQAM suff ers from high PAPR. When the power amplifi er (PA) non-linearity, which is realistic radio-frequency impairment, is taken into account; the good frequency localization property is severely compromised, due to the spectral regrowth. The first objective of this PhD thesis is, to predict the extent of the spectral regrowth in FBMC-OQAM systems, due to the PA non-linearity. The second objective is to probe techniques for FBMC-OQAM systems, such as PAPR reduction and PA linearization, in order to mitigate the NL eff ects of PA. By cumulant analysis, spectral regrowth prediction has been done for FBMC-OQAM systems. Also, some algorithms for PAPR reduction, which are based on probabilistic approach and adding signal methods, have been proposed. The coexistence capability of the FBMC-OQAM based broadband system with the narrowband PMR systems in the presence of PA has been analyzed and it has been found that coexistence is possible, provided there is a symbiotic combination of PA Input Back-off (IBO), PAPR reduction and PA linearization. Finally, a novel PA linearization technique has been proposed for FBMC-OQAM
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Déjardin, Romain. "Récepteurs itératifs dédiés à la correction de saturation pour les systèmes OFDM." Reims, 2010. http://theses.univ-reims.fr/sciences/2010REIMS005.pdf.

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Abstract:
Malgré la difficulté d’amplifier les systèmes mutli-porteuses à haut rendement, étant donnée la dynamique des signaux concernés, la modulation orthogonal frequency division multiplexing (OFDM) est aujourd’hui devenue incontournable dans les systèmes de communication. Elle est d’ailleurs de plus en plus utilisée dans les normes de transmission filaires ou non. Pourtant, le high peak-to-average power ratio (PAPR) reste le principal inconvénient de l’OFDM. Différentes techniques ont été proposées pour contraindre la dynamique des signaux à l’émission. Cependant, elles sont le plus souvent très compliquées à mettre en oeuvre et nécessitent des procédés particuliers au récepteur et la transmission d’une information supplémentaire dédiée. Contraindre volontairement l’amplitude du signal est une technique efficace et simple pour réduire le PAPR des signaux OFDM. Si le bruit hors-bande résultant peut être facilement réduit par filtrage, les dégradations subies au sein de la bande utile obligent le récepteur à adopter une stratégie de recouvrement de la performance de la transmission. Cette thèse propose une revue complète du PAPR des signaux OFDM et de la méthode de clipping des signaux d’émission. Nous proposons également d’établir la performance analytique des systèmes OFDM avec clipping au regard de la capacité de canal et de la fiabilité de l’information binaire. Aussi, les techniques au récepteur permettant de recouvrer la performance dégradée par le clipping sont étudiées. Nous portons particulièrement notre attention aux approches par annulation du bruit de clipping et reconstruction d’amplitude en proposant leur comparaison exhaustive ainsi qu’une méthode dérivée de la première. Finalement, nous posons la description d’un nouveau récepteur proposant une information a posteriori corrigée des bits du mot de code. Cette information souple est en fait basée sur une décision sous-optimale par maximum de vraisemblance (SML). L’étude de l’algorithme montre son efficacité aussi bien sur canal blanc que sélectif en fréquence ; scénarios pour lesquels il permet de s’approcher très prés du cas sans clipping
Despite the fact that multi-carrier signals amplification is pratically difficult due to their Gaussian-like distribution and the non-linear behaviour of power amplifiers, the orthogonal frequency division multiplexing (OFDM) modulation has been successfully brought in many communication standards for wired and wireless tranmsissions. However, the high peak-to-average power ratio (PAPR) of OFDM signals stands for the OFDM major drawback. Several strategies can be cited to manage the PAPR at transmitter side. However, most of them are computationally expensive and need a dedicated process at receiver relying on side information transmission. The deliberate amplitude clipping and filtering before amplification is an easy way to restrain PAPR at a desired level. If the out-of-band noise caused by clipping can be easilly discarded by filtering, the in-band distortion noise, also refered as clipping noise, must be mitigated at receiver side in order to restore the transmission performance. In this Thesis, we propose a wide review of both PAPR and clipping. We also give an analytical performance analysis of OFDM systems running under clipping constraint. Channel capacity and bit error rate are derived and conclusions are given. Afterwards, dedicated techniques mitigating clipping effects are studied. Clipping noise cancellation and decision aided reconstruction are especially reviewed. We also propose a complete comparison of these techniques and give an increased performance version of the first one. Finally, we propose a new scheme dealing with code word bits a posteriori probability enhancement. This soft decision is based on a suboptimal maximum likelihood (SML) detection using a limited neighbour signals to perform the transmitted code word detection. Actually, the receiver performance study shows that the algorithm can operate under severe clipping ratio constraint and is able to perform close to the non-clipped transmission case over both AWGN and frequencyselective channels
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Books on the topic "PAPR (Peak to Average Power Ratio)"

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Peak to Average Power Ratio in Orthogonal Frequency Division Multiplexing Systems. Taylor & Francis Group, 2014.

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Book chapters on the topic "PAPR (Peak to Average Power Ratio)"

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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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Zhou, Juan, Ying Shen, and Youxi Tang. "Peak-to-Average Power-Ratio Reduction Scheme Employing Fountain Codes." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 67–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30493-4_7.

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Abera, Workineh Gebeye, and Yihenew Wondie Marye. "Peak-to-Average Power Ratio Reduction of OFDM Signals Using Selected Mapping." In Communications in Computer and Information Science, 203–12. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26630-1_17.

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Sandeep Kumar, V. "Improved Peak-to-Average Power Ratio Reduction Method for OFDM/OQAM System." In Advances in Intelligent Systems and Computing, 695–705. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4299-6_57.

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Kumar, Arun, and Manisha Gupta. "Peak-to-Average Power Ratio Reduction in FBMC Using SLM and PTS Techniques." In Intelligent Systems Reference Library, 163–83. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8759-3_6.

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Le Khoa, Dang, Nguyen Thanh Tu, Nguyen Thi Hong Thu, and Nguyen Huu Phuong. "Peak-to-Average Power Ratio Reduction in Long Haul Coherent Optical OFDM Systems." In AETA 2013: Recent Advances in Electrical Engineering and Related Sciences, 221–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41968-3_23.

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You, Wenwan, Junqi Guo, Ke Shan, and Rongfang Bie. "Research on Peak-to-Average Power Ratio Reduction for FBMC-Based 5G Transmission." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 327–37. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-72823-0_31.

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Chandrasekhar, R., M. Kamaraju, K. Rushendra Babu, and B. Ajay Kumar. "Optimization of Peak to Average Power Ratio Reduction Using Novel Code for OFDM Systems." In Lecture Notes in Electrical Engineering, 267–75. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2728-1_24.

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Zhuang, Yuming, and Degang Chen. "Multi-tone Sine Wave Generation Achieving the Theoretical Minimum of Peak-To-Average Power Ratio." In Accurate and Robust Spectral Testing with Relaxed Instrumentation Requirements, 127–48. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77718-4_8.

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Chen, Chao-Yu, Chung-Hsuan Wang, and Chi-chao Chao. "Complementary Sets and Reed-Muller Codes for Peak-to-Average Power Ratio Reduction in OFDM." In Applied Algebra, Algebraic Algorithms and Error-Correcting Codes, 317–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11617983_31.

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Conference papers on the topic "PAPR (Peak to Average Power Ratio)"

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Malik, N. N. Nik Abd, N. Ngajikin, S. M. Idrus, and N. D. Abdul Latif. "Peak to Average Power Ratio (PAPR) Reduction in OFDM System." In 2006 International RF and Microwave Conference. IEEE, 2006. http://dx.doi.org/10.1109/rfm.2006.331041.

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Latif, Asma. "Peak to average power ratio (PAPR) reduction in OFDM systems." In International Multi Topic Conference, 2002. Abstracts. INMIC 2002. IEEE, 2002. http://dx.doi.org/10.1109/inmic.2002.1310167.

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Deshpande, Rohini, and D. J. Pete. "Optimized Peak to Average Power Ratio (PAPR) Reduction Technique for OFDM." In 2017 International Conference on Computing, Communication, Control and Automation (ICCUBEA). IEEE, 2017. http://dx.doi.org/10.1109/iccubea.2017.8463796.

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Pandey, Prashant, and Rajeev Tripathi. "Comparative analysis of peak-to-average power ratio (PAPR) reduction techniques for OFDM system." In 2013 4th International Conference on Computer and Communication Technology (ICCCT). IEEE, 2013. http://dx.doi.org/10.1109/iccct.2013.6749621.

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Wen, Jyh-Horng, Gwo-Ruey Lee, Chih-Chung Kung, and Cheng-Ying Yang. "Coding Schemes Applied to Peak-to-Average Power Ratio (PAPR) Reduction in OFDM Systems." In 2008 International Wireless Communications and Mobile Computing Conference (IWCMC). IEEE, 2008. http://dx.doi.org/10.1109/iwcmc.2008.139.

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Pandey, Prashant, and Rajeev Tripathi. "Performance Analysis of Peak-to-Average Power Ratio (PAPR) Reduction Techniques in an OFDM System." In 2012 3rd International Conference on Computer and Communication Technology (ICCCT 2012). IEEE, 2012. http://dx.doi.org/10.1109/iccct.2012.57.

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Khademi, Seyran, Alle-Jan Van der Veen, and Thomas Svantesson. "Precoding technique for peak-to-average-power-ratio (PAPR) reduction in MIMO OFDM/A systems." In ICASSP 2012 - 2012 IEEE International Conference on Acoustics, Speech and Signal Processing. IEEE, 2012. http://dx.doi.org/10.1109/icassp.2012.6288547.

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"C2. Progressive Image Transmission over OFDM System with Minimum Peak-to-Average Power Ratio (PAPR)." In 2013 30th National Radio Science Conference (NRSC). IEEE, 2013. http://dx.doi.org/10.1109/nrsc.2013.6587927.

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Hardas, Bhalchandra Madhao, and Sanjay B. Pokle. "Peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing using pilot assisted technique." In 2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET). IEEE, 2016. http://dx.doi.org/10.1109/wispnet.2016.7566151.

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Chackochan, Reena, and Himanshu Soni. "Peak to Average Power Ratio (PAPR) reduction in OFDM for a WLAN network using SLM technique." In 2011 3rd International Conference on Electronics Computer Technology (ICECT). IEEE, 2011. http://dx.doi.org/10.1109/icectech.2011.5941800.

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Reports on the topic "PAPR (Peak to Average Power Ratio)"

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Besprozvanny, Alex, and Conni King. Highly Efficient Transmitter for High Peak to Average Power Ratio (PAPR) Waveforms. Fort Belvoir, VA: Defense Technical Information Center, January 2011. http://dx.doi.org/10.21236/ada535331.

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