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Code-Time Diversity for Direct Sequence Spread Spectrum Systems [PDF]

open access: yesThe Scientific World Journal, 2014
Time diversity is achieved in direct sequence spread spectrum by receiving different faded delayed copies of the transmitted symbols from different uncorrelated channel paths when the transmission signal bandwidth is greater than the coherence bandwidth ...
A. Y. Hassan
doaj   +2 more sources

Blind Estimation of Spreading Sequence and Data Bits in Direct-Sequence Spread Spectrum Communication Systems

open access: yesIEEE Access, 2020
At the transmitter of a Direct Sequence Spread Spectrum (DSSS) communication system, data bits are spread using a spreading sequence. To demodulate the transmitted data bits, the received signal should be de-spread using the same spreading sequence ...
Hoesang Choi, Hichan Moon
doaj   +3 more sources

Improving Signal Security of Secondary Surveillance RADAR by Using Direct Sequence Spread Spectrum Technology [PDF]

open access: yesعلوم و فنون نظامی, 2020
Secondary radars are important equipment in the aviation industry. The basis of this system is the use of the L-band Q&A system for aircraft identification.
Jafar Khalilpur, Mohammad Farahmand rad
doaj   +1 more source

Performance of Direct Sequence Spread Spectrum System (DSSSS) in Presence of Single and Multi Tone Jamming [PDF]

open access: yesEngineering and Technology Journal, 2013
There are various impairments or problems on direct sequence spread spectrum communication channel especially jamming problems, in order to focus on this problem a direct sequence spread spectrum(DSSS) communication system using Gold code was used as ...
Sadiq Kamel Gharkan   +2 more
doaj   +1 more source

Inhibition of the dorsomedial striatal direct pathway is essential for the execution of action sequences

open access: yesNeuropsychopharmacology Reports, 2023
Contrary to the previous notion that the dorsomedial striatum (DMS) is crucial for acquiring new learning, accumulated evidence has suggested that the DMS also plays a role in the execution of already learned action sequences.
Anna Kono   +4 more
doaj   +1 more source

Novel direct sequence spread spectrum communication method

open access: yesTongxin xuebao, 2023
In response to the problem of limited performance and low spectral efficiency in complex multipath environments of traditional direct sequence spread spectrum communication, a cyclic prefix (CP) block transmission structure spread spectrum system with a ...
Fanglin GU   +5 more
doaj   +2 more sources

СПОСІБ ПІДВИЩЕННЯ ШВИДКОДІЇ ПУСКОВОГО ОРГАНУ АВТОМАТИЧНОГО ВКЛЮЧЕННЯ РЕЗЕРВА

open access: yesElektrotehnìka ta Elektroenergetika, 2014
Розглянуто спосіб підвищення надійності систем електропостачання з двигуновим навантаженням при короткочасних порушеннях електроживлення за рахунок вдосконалення пускових органів швидкодіючого АВР на основі запропонованого методу прискореного визначення ...
V. F. Sivokobilenko, S. V. Derkachov
doaj   +1 more source

Exergy Analysis and Heat Integration of Distillation Columns Using Thermal Coupling Method for Separation of Ternary Mixture [PDF]

open access: yesChemical Process Design, 2023
Despite distillation's popularity in the industry, it is highly energy-intensive. Heat integration is, therefore essential considering the recent energy crisis.
Taraneh Mostofian   +2 more
doaj   +1 more source

Analiza korelacionih osobina pseudoslučajnih sekvenci dužine 255 za zaštitu upravljačkog signala bespilotne letelice / Analysis of correlation properties of pseudorandom sequences of length 255 for the UAV control signal protection

open access: yesVojnotehnički Glasnik, 2010
Tehnike prenosa signala u proširenom spektru sa direktnom sekvencom predstavlja efikasan metod zaštite upravljačkog signala bespilotne letelice (BL).
Vladimir D. Orlić   +2 more
doaj   +1 more source

Rapid multi-locus sequence typing direct from uncorrected long reads using Krocus [PDF]

open access: yesPeerJ, 2018
Genome sequencing is rapidly being adopted in reference labs and hospitals for bacterial outbreak investigation and diagnostics where time is critical.
Andrew J. Page, Jacqueline A. Keane
doaj   +2 more sources

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