Results 11 to 20 of about 386 (162)

Transformation of AC to DC using Direct Sequence Spread Spectrum (DSSS) Technique for Electromagnetic Inference

open access: closedInternational Innovative Research Journal of Engineering and Technology, 2021
Before more functions of the circuit are integrated into several electromagnetic a single die or small integrated die or small integrated interference (EMI) people impacted by ac-dc converter kit, expanding. The dominant electromagnetic emission. In this paper Alternate Current (AC) - Direct Current (DC) converter source is delineated by gauging the ac-
R. Rajendra Kumar, Vivekananda Ganji
openaire   +2 more sources

Study of the Performance of DSSS UAC System Depending on the System Bandwidth and the Spreading Sequence [PDF]

open access: yesSensors, 2021
A signal transmitted in an Underwater Acoustic Communication (UAC) system operating in a shallow-water channel suffers from strong time dispersion due to multipath propagation.
Iwona Kochanska   +3 more
doaj   +2 more sources

Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle [PDF]

open access: yesSensors, 2019
Design of underwater acoustic (UWA) modems for compact-sized, underwater platforms such as autonomous underwater vehicles (AUVs) is challenging because of the practical requirement to keep an engineering balance between the performance and the system ...
Siyuan Zheng   +5 more
doaj   +2 more sources

Blind Estimation of the PN Sequence of A DSSS Signal Using A Modified Online Unsupervised Learning Machine [PDF]

open access: yesSensors, 2019
Direct sequence spread spectrum (DSSS) signals are now widely used in air and underwater acoustic communications. A receiver which does not know the pseudo-random (PN) sequence cannot demodulate the DSSS signal.
Yangjie Wei   +3 more
doaj   +2 more sources

Perancangan dan Analisa Kinerja Multichannel Audio Data Hiding (Steganography) pada MPEG Surround (MPS) dengan Metode Direct Sequence Spread Spectrum (DSSS) [PDF]

open access: green, 2020
Studi ini mengimplementasikan sistem Audio Data Hiding (steganografi) menggunakan metode Direct Sequence Spread Spectrum (DSSS) pada MPEG Surround (MPS), sebuah standar pengkodean audio untuk teknologi audio multikanal. Penelitian ini bertujuan untuk merancang dan menguji kinerja DSSS yang digunakan pada MPS.
Tomas Micko
openaire   +1 more source

On Effectiveness of Hopping-Based Spread Spectrum Techniques for Network Forensic Traceback [PDF]

open access: yesInternational Journal of Networked and Distributed Computing (IJNDC), 2013
Network-based crime has been increasing in both extent and severity and network-based forensics encapsulates an essential part of legal surveillance. A key network forensics tool is traceback that can be used to identify true sources of suspects.
Wei Yu   +6 more
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

Blind Estimation of Direct Sequence Spread Spectrum Signal Based on MCMC-UKF [PDF]

open access: yesJisuanji gongcheng, 2019
Aiming at the problem of spreading code and information sequence blind estimation for long code Direct Sequence Spread Spectrum(DSSS) signal,this paper proposes a joint estimation algorithm based on overlapping segment Markov Chain Monte Carlo-Unscented ...
MA Chao, ZHANG Limin
doaj   +1 more source

A Robust Timing and Phase Offset Estimation Technique for CPM-DSSS-Based Secured Communication Link

open access: yesIEEE Access, 2021
Continuous Phase Modulation–Direct Sequence Spread Spectrum (CPM-DSSS) is a promising scheme for a secured Point-to-Point (P2P) communication system having Anti-Jamming (AJ) capabilities.
Saima Shehzadi   +4 more
doaj   +1 more source

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