Results 21 to 30 of about 2,312,058 (282)

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

Adaptive Subcarrier PSK Intensity Modulation in Free Space Optical Systems [PDF]

open access: yes, 2010
We propose an adaptive transmission technique for free space optical (FSO) systems, operating in atmospheric turbulence and employing subcarrier phase shift keying (S-PSK) intensity modulation.
Athanasios S. Lioumpas   +6 more
core   +1 more source

A Model of OFDM based Maritime VHF Communication System for Data Exchange

open access: yesPolish 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
doaj   +1 more source

Textual geolocation in Hebrew: mapping challenges via natural place description analysis

open access: yesJournal of Spatial Information Science
Describing where a place is situated is an innate communication skill that relies on spatial cognition, spatial reasoning, and linguistic systems.
Tal Bauman   +5 more
doaj   +1 more source

OFDM Signal Research with Varied Subcarriers Number

open access: yesTransport 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
doaj   +1 more source

On the BER of Multiple-Input Multiple-Output Underwater Wireless Optical Communication Systems

open access: yes, 2015
In this paper we analyze and investigate the bit error rate (BER) performance of multiple-input multiple-output underwater wireless optical communication (MIMO-UWOC) systems.
Jamali, Mohammad Vahid, Salehi, Jawad A.
core   +1 more source

A novel BCS code in F-OFDM system: a promising candidate for 5G wireless communication systems [PDF]

open access: yes, 2021
Due to the rapid growth in wireless communication systems, Long Term Evolution (LTE), mainly based on Orthogonal Frequency Division Multiplexing (OFDM), no longer meets wireless communication systems request and higher data rate requirements. Thus,
Hussain, Ghasan Ali
core  

Analisis Unjuk Kerja Sistem Digital Video Broadcast (DVB)

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2012
DVB (Digital Video Broadcasting) adalah salah satu sistem yang digunakan untuk mentransmisikan siaran TV/Video digital hingga sampai ke pengguna akhir (end-user).
Dedi Usman Effendy   +2 more
doaj   +1 more source

General BER Expression for One-Dimensional Constellations

open access: yes, 2012
A novel general ready-to-use bit-error rate (BER) expression for one-dimensional constellations is developed. The BER analysis is performed for bit patterns that form a labeling.
Agrell, Erik   +3 more
core   +1 more source

Error Propagation Mitigation in Sliding Window Decoding of Braided Convolutional Codes

open access: yes, 2020
We investigate error propagation in sliding window decoding of braided convolutional codes (BCCs). Previous studies of BCCs have focused on iterative decoding thresholds, minimum distance properties, and their bit error rate (BER) performance at small to
Bai, Baoming,   +5 more
core   +1 more source

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