In this chapter, we will discuss some basic concepts and properties of direct sequence spread-spectrum technology, illustrating the mathematical models of spreading modulated signals and their important characteristics in time and frequency domains. These characteristics will be used frequently in the ...
基本单位 [translate] aDirect sequence spread spectrum transmissions (DS-SS) are now widely used for secure communications,as well as for multiple access. They have many interesting properties, including low probability of interception. Indeed, DS-SS transmitters use a [translate] ...
aDirect sequence spread spectrum transmissions (DS-SS) are now widely used for secure communications,as well as for multiple access. They have many interesting properties, including low probability of interception. Indeed, DS-SS transmitters use a[translate] ...
Component-resolved spectroscopy of the individual stars in young binaries at high-angular and high-spectral resolution provides a window on the fundamental physical and dynamical stellar properties and the presence of active accretion disks. With observations of large samples of small separation (< 50 ...
spread spectrum systemsThe local properties and accuracy of the positronium negative-ion (Ps) ground-state wave functions obtained by the stochastic ... R Krivec,VB Mandelzweig,K Varga - 《Physical Review A》 被引量: 51发表: 2000年 Quantifying Spatio-Temporal Variation of Invasion Spread We de...
and made correlation analysis under the Matlab environment.Instead of tranditional PN codes,this paper used chaotic sequences produced by Chebyshev map as the Spread Spectrum(SS) code in SS communication system.Simulation of SS communication system under Simlink,shows the anti-jamming capacity of the...
Plants with traditional use are those that have medicinal properties and are used by a certain group of people, from one or more locations, that are thought to be safe for humans (Junsi & Siripongvutikorn, 2016). From: Trends in Food Science & Technology, 2017 About this pageSet alert ...
Therefore, this paper finally proposes an original point of view on interleavers based on an LPTV framework. Particularly, new results concerning frequency effects of interleavers are presented. 展开 关键词: linear periodic time varying filter digital periodic clock change interleaver spread spectrum ...
A technique of spread-spectrum transmission, interpolated frequency-hopping (IFH), is presented. IFH employs a carrier that moves smoothly and continuously... NM Filiol,C Plett,RMA Copeland - 《IEEE Transactions on Automatic Control》 被引量: 0发表: 1998年 Sources Sought Notice Details Prepare...
(oxadiazole-imide)s containing naphthalene rings Mariana-Dana Damaceanu1, Radu-Dan Rusu1, Maria Bruma1 and Bozena Jarzabek2 Two series of poly(oxadiazole-imide)s based on naphthalene-containing anhydrides and aromatic diamines containing preformed oxadiazole rings have been synthesized and their ...