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Peak to Average Power Ratio Reduction and Error Control in Mimo-Ofdm Harq System = = Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Peak to Average Power Ratio Reduction and Error Control in Mimo-Ofdm Harq System =/
其他題名:	Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM.
其他題名:	Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM.
作者:	Sandoval Norena, Francisco Alberto.
面頁冊數:	1 online resource (200 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-02, Section: B.
Contained By:	Dissertations Abstracts International84-02B.
標題:	Electrical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9798841727583

Peak to Average Power Ratio Reduction and Error Control in Mimo-Ofdm Harq System = = Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM.
Sandoval Norena, Francisco Alberto.

Peak to Average Power Ratio Reduction and Error Control in Mimo-Ofdm Harq System =Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM.Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM. - 1 online resource (200 pages)

Source: Dissertations Abstracts International, Volume: 84-02, Section: B.

Thesis (D.Eng.)--Ecole de Technologie Superieure (Canada), 2019.

Includes bibliographical references

Currently, multiple-input multiple-output orthogonal frequency division multiplexing (MIMOOFDM) systems underlie crucial wireless communication systems such as commercial 4G and 5G networks, tactical communication, and interoperable Public Safety communications. However, one drawback arising from OFDM modulation is its resulting high peak-to-average power ratio (PAPR). This problem increases with an increase in the number of transmit antennas.In this work, a new hybrid PAPR reduction technique is proposed for space-time block coding (STBC) MIMO-OFDM systems that combine the coding capabilities to PAPR reduction methods, while leveraging the new degree of freedom provided by the presence of multiple transmit chairs (MIMO).In the first part, we presented an extensive literature review of PAPR reduction techniques for OFDM and MIMO-OFDM systems. The work developed a PAPR reduction technique taxonomy, and analyzed the motivations for reducing the PAPR in current communication systems, emphasizing two important motivations such as power savings and coverage gain. In the tax onomy presented here, we include a new category, namely, hybrid techniques. Additionally, we drew a conclusion regarding the importance of hybrid PAPR reduction techniques.In the second part, we studied the effect of forward error correction (FEC) codes on the PAPR for the coded OFDM (COFDM) system. We simulated and compared the CCDF of the PAPR and its relationship with the autocorrelation of the COFDM signal before the inverse fast Fourier transform (IFFT) block. This allows to conclude on the main characteristics of the codes that generate high peaks in the COFDM signal, and therefore, the optimal parameters in order to reduce PAPR. We emphasize our study in FEC codes as linear block codes, and convolutional codes.Finally, we proposed a new hybrid PAPR reduction technique for an STBC MIMO-OFDM system, in which the convolutional code is optimized to avoid PAPR degradation, which also combines successive suboptimal cross-antenna rotation and inversion (SS-CARI) and iterative modified companding and filtering schemes. The new method permits to obtain a significant net gain for the system, i.e., considerable PAPR reduction, bit error rate (BER) gain as compared to the basic MIMO-OFDM system, low complexity, and reduced spectral splatter. The new hybrid technique was extensively evaluated by simulation, and the complementary cumulative distribution function (CCDF), the BER, and the power spectral density (PSD) were compared to the original STBC MIMO-OFDM signal.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798841727583Subjects--Topical Terms:

596380
Electrical engineering.
Subjects--Index Terms:

Convolutional codesIndex Terms--Genre/Form:

554714
Electronic books.

Peak to Average Power Ratio Reduction and Error Control in Mimo-Ofdm Harq System = = Reduction du rapport de puissance crete a moyenne et controle des erreurs dans le systeme HARQ MIMO-OFDM.
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500 $a Source: Dissertations Abstracts International, Volume: 84-02, Section: B.
500 $a Advisor: Gagnon, Francois;Poitau, Gwenael.
502 $a Thesis (D.Eng.)--Ecole de Technologie Superieure (Canada), 2019.
504 $a Includes bibliographical references
520 $a Currently, multiple-input multiple-output orthogonal frequency division multiplexing (MIMOOFDM) systems underlie crucial wireless communication systems such as commercial 4G and 5G networks, tactical communication, and interoperable Public Safety communications. However, one drawback arising from OFDM modulation is its resulting high peak-to-average power ratio (PAPR). This problem increases with an increase in the number of transmit antennas.In this work, a new hybrid PAPR reduction technique is proposed for space-time block coding (STBC) MIMO-OFDM systems that combine the coding capabilities to PAPR reduction methods, while leveraging the new degree of freedom provided by the presence of multiple transmit chairs (MIMO).In the first part, we presented an extensive literature review of PAPR reduction techniques for OFDM and MIMO-OFDM systems. The work developed a PAPR reduction technique taxonomy, and analyzed the motivations for reducing the PAPR in current communication systems, emphasizing two important motivations such as power savings and coverage gain. In the tax onomy presented here, we include a new category, namely, hybrid techniques. Additionally, we drew a conclusion regarding the importance of hybrid PAPR reduction techniques.In the second part, we studied the effect of forward error correction (FEC) codes on the PAPR for the coded OFDM (COFDM) system. We simulated and compared the CCDF of the PAPR and its relationship with the autocorrelation of the COFDM signal before the inverse fast Fourier transform (IFFT) block. This allows to conclude on the main characteristics of the codes that generate high peaks in the COFDM signal, and therefore, the optimal parameters in order to reduce PAPR. We emphasize our study in FEC codes as linear block codes, and convolutional codes.Finally, we proposed a new hybrid PAPR reduction technique for an STBC MIMO-OFDM system, in which the convolutional code is optimized to avoid PAPR degradation, which also combines successive suboptimal cross-antenna rotation and inversion (SS-CARI) and iterative modified companding and filtering schemes. The new method permits to obtain a significant net gain for the system, i.e., considerable PAPR reduction, bit error rate (BER) gain as compared to the basic MIMO-OFDM system, low complexity, and reduced spectral splatter. The new hybrid technique was extensively evaluated by simulation, and the complementary cumulative distribution function (CCDF), the BER, and the power spectral density (PSD) were compared to the original STBC MIMO-OFDM signal.
520 $a Actuellement, les systemes MIMO-OFDM constituent la base d'importants systemes de communication sans fil tels que les reseaux commerciaux 4G et 5G, les communications tactiques et les communications interoperables pour la securite publique. Cependant, un inconvenient de la modulation OFDM est le haut rapport puissance crete a puissance moyenne (PAPR). Ce probleme augmente lorsque le nombre d'antennes d'emission augmente.Ce travail consiste a proposer une nouvelle technique de reduction de PAPR hybride pour les systemes MIMO-OFDM de codage de bloc espace-temps (STBC). Cette technique combine les capacites de codage aux methodes de reduction des PAPR tout en exploitant le nouveau degre de liberte offert par la presence de plusieurs chaines de transmission (MIMO).Dans la premiere partie, nous presentons une revue de litterature approfondie des techniques de reduction de PAPR pour les systemes OFDM et MIMO-OFDM. Ces travaux ont permis de mettre au point une taxonomie de technique de reduction de PAPR, d'analyser les motivations de reduction de PAPR dans les systemes de communication actuels tenant compte du gain de couverture, de comparer par simulation les caracteristiques de chaque categorie et conclure par l'importance des techniques de reduction de PAPR hybride.Dans la deuxieme partie, nous etudions l'effet des codes de correction d'erreurs en aval (FEC), tels que les codes de bloc lineaires et les codes de convolution sur le PAPR du systeme OFDM code (COFDM). Nous avons simule et compare la fonction de distribution cumulative complementaire (FDCC) du PAPR et sa relation avec l'autocorrelation du signal COFDM avant de transiter par le bloc de transformee de Fourier rapide inverse (IFFT). Cela permet de conclure sur les caracteristiques principales des codes qui generent des pics eleves dans le signal COFDM, et donc sur les parametres optimaux afin de reduire le PAPR.Enfin, nous proposons une nouvelle technique de reduction de PAPR hybride pour le systeme STBC MIMO-OFDM, dans laquelle le code de convolution est optimise pour eviter la degradation de PAPR, et combine les schemas successifs de rotation, d'inversion (SS-CARI), de composition modifiee iterative et de filtrage sous-optimal. La nouvelle methode permet d'obtenir un gain net considerable pour le systeme, c'est-a-dire une reduction considerable du PAPR, un gain de taux d'erreur sur les bits (BER) par rapport au systeme MIMO-OFDM de base, une faible complexite et une empreinte spectrale reduite. La nouvelle technique hybride a ete largement evaluee par simulation et la fonction de distribution cumulative complementaire (CCDF), le BER et la densite spectrale de puissance (PSD) ont ete compares au signal STBC MIMO-OFDM d'origine.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Electrical engineering. $3 596380
653 $a Convolutional codes
653 $a High power amplifier
653 $a Orthogonal frequency division multiplexing
653 $a Peak-to-average power ratio
653 $a Tactical communication
653 $a Space-time block coding
655 7 $a Electronic books. $2 local $3 554714
690 $a 0544
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Ecole de Technologie Superieure (Canada). $b Departement de genie electrique. $3 1437637
773 0 $t Dissertations Abstracts International $g 84-02B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28315989 $z click for full text (PQDT)