Results 31 to 40 of about 8,316 (179)

Modification of Existing PAPR Reduction Techniques to Improve PAPR Performance of the System using CCDF

, 2022
Abstract OFDM is a multicarrier modulation technology utilized in various wireless communication systems and standards for its high data rate, high spectral coherence, and tolerance to multi-path fading channels. However, one of the most significant barriers in implementing an OFDM system is decreasing the peak-to-average ratio (PAPR).
Harsh Dhiman, Charu Madhu, Daljeet Kaur, Vijay Kumar   +3 more
openaire   +1 more source

Analysis of PAPR in optical OFDM systems with grouped LEDs [PDF]

, 2017
The need for multiple transmit chains poses a major challenge in optical orthogonal frequency division multiplexing (OFDM) system utilising grouped light emitting diodes (LEDs) for the purpose of peak-to-average power ratio (PAPR) reduction. Thus, recent
Offiong, Funmilayo B., Popoola, Wasiu O., Sinanovic, Sinan   +2 more
core   +2 more sources

Regulating of wear properties through microstructure engineering in novel cost-effective Fe30Ni25Cr25Mo10Al10 high-entropy alloy processed by cyclic closed-die forging

Journal of Alloys and Metallurgical Systems
This study presents a novel cost-effective Fe30Ni25Cr25Mo10Al10 high-entropy alloy with a dual-phase microstructure that was processed using cyclic closed-die forging (CCDF) at room temperature for a maximum of six passes.
Majid Naseri, Alena Myasnikova, Davood Gholami, Omid Imantalab, Dmitry Mikhailov, Mostafa Amra, Nataliya Shaburova, Milena Efimova, Aleksandr Orlov, Seyedmehdi Hosseini, Yong-Cheng Lin, Abdel-Hamid I. Mourad, Evgeny Trofimov   +12 more
doaj   +1 more source

A novel reduced complexity optimized PTS technique for PAPR reduction in wireless OFDM systems

Egyptian Informatics Journal, 2017
In this paper, we propose a novel low complexity Partial Transmit Sequence (PTS) technique employing Random phase sequence matrix (RPSM) for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems.
M.V.R. Vittal, K. Rama Naidu
doaj   +1 more source

Geometrical effects on mobility [PDF]

, 2017
In this paper we analyze the effect of randomly deleting streets of a synthetic city on the statistics of displacements. Our city is constituted initially by a set of streets that form a regular tessellation of the euclidean plane. Therefore we will have
Lopez, Jorge H.
core   +1 more source

Three‐Year Propagation Experiment at Ku‐, Ka‐, and Q‐Band in French West Indies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT From January 2021 to December 2023, the Office National d'Etudes et de Recherches Aérospatiales (ONERA) and the Centre National d'Etudes Spatiales (CNES) conducted a three‐year Earth‐space propagation measurement campaign in Guadeloupe. The experiment used beacon receivers deployed in Pointe‐à‐Pitre airport to record signals at 11.2, 19.7, and
Jean‐Pascal Monvoisin, Laurent Castanet, Laurent Féral, Xavier Boulanger   +3 more
wiley   +1 more source

Preprocessing Procedure for Propagation Measurements on MEO Satellite Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper presents a software tool designed for preprocessing data from an experimental campaign aimed at characterizing the tropospheric propagation channel using Medium Earth Orbit (MEO) satellites. The collected data provide critical insights into the channel in scenarios involving continuous variations in azimuth and elevation, along with
Marlene Brás, Susana Mota, Armando Rocha   +2 more
wiley   +1 more source

Window-based UFMC technique for 5G systems

Wasit Journal of Engineering Sciences, 2021
In this paper, we investigate the universal filtered multi-carrier system (UFMC) for 5G and subsequent connections with the aid of the MATLAB package. It can be considered that the UFMC technology provides an advantage against inter-symbol interference (
Safa N. Idi, Mahmood A. Mahmood, Hasan F. Khazaal   +2 more
doaj   +1 more source

Update Delay: A new Information-Centric Metric for a Combined Communication and Application Level Reliability Evaluation of CAM based Safety Applications [PDF]

, 2012
Standard network metrics, such as throughput, latency and reception probability, are the most popular performance indicators used in the literature to describe and compare communication protocol variations. However, these “traditional” network-centric PI
Härri, Jérôme, Kloiber, Bernhard, Rico-Garcia, Cristina, Strang, Thomas   +3 more
core  

The Seismic Expression of Core Complex‐Style Extensional Detachment Faults in Rifted Margins

Terra Nova, EarlyView.
ABSTRACT The identification of core complex‐style extensional detachment faults (CCDFs) in rifted margins is crucial for accurately restoring their stratigraphic and thermal histories. Yet recognising CCDFs in seismic reflection images is challenging due to their faint topographic expression; the lack of associated abrupt offset in seismic reflections;
Pauline Chenin, Gianreto Manatschal, Cuimei Zhang, Peng Chao   +3 more
wiley   +1 more source