Results 1 to 10 of about 133,038 (169)

Comparison of FFT-Based and DCT-Based Channel Estimation and ECC for OFDM System [PDF]

open access: yesEngineering and Technology Journal, 2015
Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method for high data rate wireless communications. In this paper, two schemes are proposed.
Awatif Ali Jafaar
doaj   +1 more source

Multiple Access Chua Chaotic Communication system using Real Orthogonal Matrix Approach [PDF]

open access: yesEngineering and Technology Journal, 2018
An alternative to traditional Pseudo-Noise (PN)-Sequences, one-dimension (1D) orthogonal chaotic map sequences, and three dimensional (3D) continuous chaotic systems (x,y,z) are generated by orthonormal Gram-Schmidt process. A new Orthogonal Chua Chaotic
Ali Radhi
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

OFDM Channel Estimation Along with Denoising Approach under Small SNR Environment using SSA

open access: yesJournal of Communications Software and Systems, 2022
—In this paper, a de-noising approach in conjunction with channel estimation (CE) algorithm for OFDM systems using singular spectrum analysis (SSA) is presented. In the proposed algorithm, the initial CE is computed with the aid of traditional linear
E. Hari Krishna   +2 more
doaj   +1 more source

�ber indigoide Farbstoffe der Anthracenreihe [PDF]

open access: yesMonatshefte f�r Chemie, 1909
n ...
Bezdzik, A., Friedlaender, P.
openaire   +2 more sources

Implementation and testing of a FSK demodulator

open access: yesRevista Elektrón, 2021
This work describes the implementation and testing of a FSK demodulator, within the framework of a modem re-engineering for navy communications. It was developed over a Spartan 6 XCSLX25 FPGA with its code in VHDL.
Leandro José Ferrari   +3 more
doaj   +1 more source

Performasi Metode Algoritma First Maximum Expansion pada Penjadwalan Kanal Uplink untuk Long Term Evolution

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2021
LTE adalah salah satu jaringan telekomunikasi yang memiliki keunggulan utama berupa data rate yang tinggi, karena keunggulan tersebut membuat jaringan ini menjadi salah satu jaringan yang paling banyak digunakan.
Endah Budi Purnomowati   +2 more
doaj   +1 more source

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

Perancangan Jaringan Fiber to the Home (FTTH) pada Perumahan di Daerah Urban

open access: yesJurnal Nasional Teknik Elektro dan Teknologi Informasi, 2020
Evolusi jaringan komunikasi hadir dari kebutuhan pengguna untuk tetap terkoneksi kapan pun dan di mana pun. Modernisasi jaringan terus dilakukan untuk meningkatkan kapasitas bandwidth agar didapatkan peningkatan layanan multimedia, terutama di kawasan ...
Sahid Ridho   +4 more
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

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