Results 1 to 10 of about 2,358,795 (324)

Performance study of a coexistence system in a PON network taking into account the stimulated scattering of Raman [PDF]

open access: yesE3S Web of Conferences, 2022
Some problems introduced by the need for coexistence between a Passive Optical Network PON technologies (GPON, XGS-PON, and NG-PON2 in particular) especially the Stimulated Raman Scattering SRS which appears when different PON technologies transfer ...
Kherici Cheikh, Kandouci Malika
doaj   +1 more source

Coherent Detection of Non-Orthogonal Spectrally Efficient Multicarrier Signals Using a Decision Feedback Algorithm

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2021
Introduction. Spectrally efficient frequency division multiplexing (SEFDM) is a promising technology for improving spectral efficiency. Since SEFDM signals transmitted on subcarriers are not orthogonal, interchannel interference occurs due to the mutual ...
S. B. Makarov   +3 more
doaj   +1 more source

CE-OFDM-CDMA Phase Modulation for 5G System [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2021
In the present work, we propose a novel modulation scheme for 5G wireless communication system. Our contribution is to combine PM-OFDM (Phase Modulation Orthogonal Frequency Division Multiplexing) and CDMA (Code Division Multiple Access) to exploit their
Jamal Mestoui   +4 more
doaj   +1 more source

Protection scheme of subcarrier index in OFDM with index modulation aided by LDPC coding

open access: yesXibei Gongye Daxue Xuebao, 2021
The receiver of OFDM with Index Modulation (OFDM-IM) usually adopts a Log Likelihood Ratio (LLR) detection algorithm based on the activation state of subcarriers.

doaj   +1 more source

Innovative economic anthocyanin dye source for enhancing the performance of dye-sensitized solar cell

open access: yesJournal of Taibah University for Science, 2022
Four natural dyes were extracted from different fruits used in the Dye-sensitized solar cell (DSSC). It includes ber, blackberry, black grapes, and blueberry by individual dye or combined with other dyes.
Sirhan Al Batty   +4 more
doaj   +1 more source

SnapKi—An Inertial Easy-to-Adapt Wearable Textile Device for Movement Quantification of Neurological Patients

open access: yesSensors, 2020
The development of wearable health systems has been the focus of many researchers who aim to find solutions in healthcare. Additionally, the large potential of textiles to integrate electronics, together with the comfort and usability they provide, has ...
Ana Oliveira   +4 more
doaj   +1 more source

A Novel PM-OFDM-CDMA System for 5G Wireless Communication with High Capacity and Low Energy Consumption

open access: yesASM Science Journal, 2021
Phase Modulation Orthogonal Frequency Division Multiplexing (PM-OFDM) and Code Division Multiple Access (CDMA) have distinctive advantages. On one hand, PM-OFDM is an attractive technique to combat multipath fading and reduce high PAPR in conventional ...
Jamal Mestoui
doaj   +1 more source

Information Hiding in Color Image based on LSB and FA [PDF]

open access: yesKirkuk Journal of Science, 2017
In this research was to hide information in color images of the type of Joint Photographic Experts Group (JPEG) using hiding technique Least Significant Bit (LSB) with Firefly algorithm.
Dr. Ahmed Sami Nori, Jasim Ibrahim Jasim
doaj   +1 more source

Desain Program Simulasi Unjuk Kerja Kode Walsh Pada Kanal Multipath Fading

open access: yesMatrix: Jurnal Manajemen Teknologi dan Informatika, 2020
Penelitian ini bertujuan untuk mengetahui pengaruh perubahan jumlah komponen multipath pada unjuk kerja kode Walsh pada kanal multipath fading melalui simulasi dengan menggunakan software Matlab.
Made Arya Putra Kusuma   +3 more
doaj   +1 more source

FULL-RATE SPACE-TIME BLOCK CODE FOR FOUR TRANSMIT ANTENNAS WITH LINEAR DECODING

open access: yesJordanian Journal of Computers and Information Technology, 2020
This paper proposes a new full-rate space-time block code for MIMO systems at four transmit antennas, which aims at minimizing the bit error rate with low-complexity decoding using ZF and MMSE linear detection techniques in Rayleigh fading channels ...
Younes Djemamar   +2 more
doaj   +1 more source

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