Publications (115)
ARTICLE
A Figure-of-Merit for Evaluating the Overall Performance of OFDM PAPR Reduction Techniques in the Presence of High Power Amplifier
Guel Désiré and Palicot Jacques
One of the major drawbacks of Orthogonal Frequency-Division Multiplexing (OFDM) is the large envelope fluctuations which either require an inefficient use of High Power Amplifiers (HPA) or decrease the system performance. Peak to-Average Power Ratio (PAPR) is a very well known measure of the envelope fluctuations and has become the cost functi(...)
Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Overall Performance (OP), High Power Amplifier (HPA)
ARTICLE
Transformation grâce à un Filtrage Numérique des techniques "Ajout de Signal" en techniques "Tone Reservation" pour la Réduction du PAPR des Signaux OFDM
Désiré GUEL, Jacques PALICOT
L'OFDM (Orthogonal Frequency Division Multiplexing) souffre d'une grande variation d'amplitude caractérisée par un PAPR (Peak-to-Average Power Ratio) élevé. La "Réservation Tone" (TR) est une technique de réduction de PAPR qui utilise un ensemble de porteuses réservées pour transmettre le "signal de réduction du PAPR". Du f(...)
PAPR, Tone Reservation, Signaux OFDM
ARTICLE
Analysis and comparison of clipping techniques for OFDM Peak-to-Average Power Ratio reduction
Guel Desire and Palicot Jacques
One of the main disadvantages of Orthogonal Frequency Division Multiplexing (OFDM) is its high Peak-to-Average Power Ratio (PAPR), which significantly reduces the efficiency of the High Power Amplifier (HPA). Due to the simplest way for PAPR reduction, clipping techniques are frequently used in practice for OFDM PAPR reduction. In this paper,(...)
Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Clipping techniques
ARTICLE
OFDM PAPR Reduction Based on Nonlinear Functions without BER Degradation and Out-of-Band Emission
Guel Désire and Palicot Jacques
Peak-to-average power ratio (PAPR) reduction techniques based on nonlinear functions (clipping, companding techniques, etc) are the most straightforward PAPR reduction methods. These techniques reduce the PAPR at the cost of generating distortions. In this paper, we prove basing on Bussgang theorem that in context of PAPR reduction techniques(...)
Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Nonlinear functions
ARTICLE
Clipping Formulated As an Adding Signal Technique for OFDM Peak Power Reduction
Guel Desire and Palicot Jacques
Due to the simplest way for PAPR reduction, clipping technique have been proposed and seem to be promising for use in commercial systems. In this paper, the conventional clipping technique is formulated as an adding signal technique for PAPR reduction. We show that, when clipping occurs very rarely, the adding signal for PAPR reduction commonl(...)
Peak to Average Power Ratio (PAPR), Nonlinear distortion, Wireless LAN
ARTICLE
Artificial signals addition for reducing PAPR of OFDM systems
Guel Desire and Palicot Jacques
One of the major drawbacks of OFDM modulation is the large envelope fluctuations which either result in an inefficient use of high power amplifiers (HPA) or decreased transmission system performance. Peak-to-Average Power Ratio (PAPR) is a very well known measure of the envelope fluctuations and has become the cost function used to evaluate an(...)
Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Artificial Signals
ARTICLE
Approximation of the average power variation for Geometric adding signal approach of PAPR reduction in context of OFDM signals
Désiré Guel, Jacques Palicot
One of the major drawbacks of adding signal techniques of reducing peak to average power ratio (PAPR) is the variation of the average power of the transmit signal that undoubtedly degrades the performance of transmission. In this paper, assuming that the baseband OFDM signal is characterized as a complex Gaussian process, we derive an approxim(...)
Mots clés non renseignés
ARTICLE
Frequency based asymptotic distribution of the PAPR for geometric adding signal approach in OFDM signals context
Guel, D. and Palicot, J. and Bellanger, J.-J.
The distribution of the peak-to-average power ratio (PAPR) for Geometric method [1] of PAPR reduction in orthogonal frequency-division multiplexing (OFDM) signals is evaluated in order to analyse the influence of the carrier frequency of adding signal on the PAPR reduction. Assuming that the baseband OFDM signal is characterized as a band-limi(...)
Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Asymptotic Distribution
ARTICLE
Réduction du PAPR par Ajout de Signal hors bande dans un contexte de Signaux Multiporteuses
Désiré Guel , Jacques Palicot , Yves Louët
Dans cet article il est question de la mise en oeuvre d'une technique de réduction du rapport puissance maximale à puissance moyenne (PAPR) pour des systèmes OFDM par ajout de signal artificiel. Nous présentons une nouvelle technique de réduction du PAPR par ajout de signal pour des signaux multiporteuses, nous étudions ensuite sa complexité a(...)
PAPR, Signaux Multiporteuses
ARTICLE
A Geometric Method for PAPR Reduction in a Signal Adding Context for OFDM Signals
Desire Guel; Yves Louet; Jacques Palicot
This paper presents a new technique for OFDM signal PAPR reduction by adding an artificial signal in order to restrict the envelope of the resulting signal. The algorithm is presented, some simulation results and a complexity study are given. According to these results, the new method outperforms the conclusions presented in [1]. The PAPR is r(...)
OFDM, PAPR, HPA