Results 1 to 10 of about 2,312,058 (282)

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

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

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

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

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

On the Exact BER of Bit-Wise Demodulators for One-Dimensional Constellations [PDF]

open access: yes, 2012
The optimal bit-wise demodulator for M-ary pulse amplitude modulation (PAM) over the additive white Gaussian noise channel is analyzed in terms of uncoded bit-error rate (BER).
Agrell, Erik   +3 more
core   +2 more sources

Wearable Health Devices—Vital Sign Monitoring, Systems and Technologies

open access: yesSensors, 2018
Wearable Health Devices (WHDs) are increasingly helping people to better monitor their health status both at an activity/fitness level for self-health tracking and at a medical level providing more data to clinicians with a potential for earlier ...
Duarte Dias, João Paulo Silva Cunha
doaj   +1 more source

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