Results 21 to 30 of about 68,977 (255)
Period Estimation of Spread Spectrum Codes Based on ResNet
Sensors, 2023 In order to more effectively monitor and interfere with enemy signals, it is particularly important to accurately and efficiently identify the intercepted signals and estimate their parameters in the increasingly complex electromagnetic environment ...
Han-Qing Gu +4 more
doaj +1 more source
Direct sequence spread spectrum: history, principles and modern applications
Vojnotehnički GlasnikIntroduction/purpose: Direct sequence spread spectrum modulation is widely used in many radiocommunications systems. At the first time, this modulation technique was used in military communications and navigation systems.
Nenad M. Stojanović +3 more
doaj +1 more source
Design and Evaluation of an Acoustic Modem for a Small Autonomous Unmanned Vehicle
Sensors, 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 +1 more source
IEEE Access, 2022 Weighted fractional Fourier transform encrypted chaotic direct sequence spread spectrum (WFRFT-CD3S) signal is aperiodic and complex Gaussian distributed.
Jiangyan He +3 more
doaj +1 more source
A class of fractional-order hyperchaotic system and its application in spread spectrum communication
工程科学学报, 2015 A class of fractional-order hyperchaotic system is introduced and its basic dynamical properties are investigated by means of theoretical analysis and numerical simulation.
ZHANG Xiao-dan, WANG Qi-li
doaj +1 more source
A New Scheme for Spreading & De-spreading in the Direct Sequence Spread Spectrum Mechanism
International Journal of Communication Networks and Information Security (IJCNIS), 2022 Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS) techniques are widely used to implement code-division multiple access (CDMA) in wireless communication systems. Both DSSS and FHSS systems help reducing the effects of interference on the transmitted information making it robust against channel impairments.
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider +15 more
wiley +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk +10 more
wiley +1 more source
Pediatric Idiopathic Multicentric Castleman Disease Is Often Severe But Responsive to Siltuximab
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Idiopathic multicentric Castleman disease (iMCD) is a potentially fatal immunologic disorder marked by widespread lymphadenopathy and inflammation. Siltuximab, an interleukin‐6 (IL‐6) inhibitor, is the only FDA‐approved treatment for adult patients with iMCD.
Bridget Austin +17 more
wiley +1 more source
Quantum Direct-Sequence Spread-Spectrum CDMA Communication Systems: Mathematical Foundations
IEEE Transactions on Quantum EngineeringThis article describes the fundamental principles and mathematical foundations of quantum direct-sequence spread-spectrum code division multiple-access communication systems.
Mohammad Amir Dastgheib +2 more
doaj +1 more source