Results 21 to 30 of about 125,727 (149)
Analysis of Possibilities of Increasing the Spanned Distance Using EDFA and DRA in DWDM System
Communications, 2017 The aim of this article is a comparison of the EDFA (Erbium Doped Fibre Amplifier) and the DRA (Distributed Raman Amplifier) in a fully optical communication system, working on a specific wavelength. The amplifiers are compared based on their position in
Tomas Ivaniga +3 more
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ASM 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
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Information Hiding in Color Image based on LSB and FA [PDF]
Kirkuk 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
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Performance analysis of nonlinear crosstalk of WDM systems using modulation schemes criteria
Open EngineeringNonlinearities in optical fibers are regarded as the most significant barriers that endanger the effectiveness of the optical transmission system and pose a threat to communication quality.
Mohammed Nidhal Abd +3 more
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Desain Program Simulasi Unjuk Kerja Kode Walsh Pada Kanal Multipath Fading
Matrix: 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
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A Model of OFDM based Maritime VHF Communication System for Data Exchange
Polish Maritime Research, 2018 In the maritime Very High Frequency (VHF) band, there are no systems for transmitting large amounts of data. Therefore, it is necessary to develop new systems that would modernize the Global Maritime Distress and Safety System (GMDSS), significantly ...
Valčić Sanjin +2 more
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FULL-RATE SPACE-TIME BLOCK CODE FOR FOUR TRANSMIT ANTENNAS WITH LINEAR DECODING
Jordanian 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
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OFDM Signal Research with Varied Subcarriers Number
Transport and Telecommunication, 2016 The orthogonal frequency division multiplexing (OFDM) aggregate signal energy characteristics are studied based on the OFDM signal simulation model. The information reliability of OFDM signal is explored for different sets of OFDM subcarrier numbers and ...
Uryvsky Leonid, Osypchuk Serhii
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HortTechnology, 2022 Ziziphus mauritiana Lam. is a widespread shrub or tree of the Sahel region, where it grows wild and is used for various purposes, including nutrition, medicine, and firewood.
Hamidou F. Sakhanokho +2 more
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Российский технологический журналObjectives. The work sets out to evaluate the noise immunity of the signal modulation method in 5G networks using a filter bank multicarrier with offset quadrature amplitude modulation (FBMC-OQAM) and to analyze the bit error rate (BER).Methods.
A. Androon, O. V. Tikhonova
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