Results 91 to 100 of about 97,280 (308)

Crest Factors of Complementary-Sequence-Based Multicode MC-CDMA Signals

open access: yes, 2003
The crest factor properties of binary phase-shift keying modulated two- and four-code assisted multicarrier code-division multiple-access (MC-CDMA) employing complementary-sequence-based spreading sequences are characterized.
Choi, B.J., Hanzo, L.
core  

Psi_B-energy operator and cross-power spectral density [PDF]

open access: yes, 2014
In this paper we consider the hermitian extension of the cross-Psi_B-energy operator that we will denote by Psi_H. In addition, cross energy terms are formalized through multivariate signals representation.
CHONAVEL, Thierry   +2 more
core   +1 more source

THE METHOD OF INCREASING THE IMMUNITY OF COMMUNICATION SYSTEMS

open access: yesСучасні інформаційні системи, 2019
Nowadays, due to a severe shortage of radio resources of communication systems, which is caused by an increase in the number of subscribers of cellular communication systems, an increase in demand for information resources, which in turn leads to the ...
Qasim Abbood Mahdi
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

Performance Analysis of Coded $M$-ary Orthogonal Signaling Using Errors-and Erasures Decoding Over Frequency-Selective Fading Channels

open access: yes, 2001
The performance of $M$-ary orthogonal signaling schemes employing Reed–Solomon (RS) codes and redundant residue number system (RRNS) codes is investigated over frequency-selective Rayleigh fading channels.
Yang, L-L., Hanzo, L.
core  

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

Improved Coarray Interpolation Algorithms with Additional Orthogonal Constraint for Cyclostationary Signals

open access: yesSensors, 2018
Many modulated signals exhibit a cyclostationarity property, which can be exploited in direction-of-arrival (DOA) estimation to effectively eliminate interference and noise.
Jinyang Song, Feng Shen
doaj   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang   +10 more
wiley   +1 more source

Robust identification for linear-in-the-parameters models

open access: yes, 2003
In this paper new robust nonlinear model construction algorithms for a large class of linear-in-the-parameters models are introduced to enhance model robustness, including three algorithms using combined A- or D-optimality or PRESS statistic (Predicted ...
Harris, C. J.   +5 more
core  

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