نتایج جستجو برای: carrier communication
تعداد نتایج: 413008 فیلتر نتایج به سال:
one of the limitations of orthogonal frequency division multiplexing (ofdm) in many applications is its sensitivity to frequency shifts, errors normally referred to as carrier frequency offset (cfo). although, this small offset is negligible in conventional single carrier communication systems, it is a severe problem in the ofdm systems. because, the carriers in ofdm are inherently closely spac...
Recently, research on sixth-generation (6G) networks has gained significant interest. 6G is expected to enable a wide-range of applications that fifth-generation (5G) will not be able serve reliably, such as tactile Internet. Additionally, offer Terabits per second (Tbps) data rates, 10 times lower latency, and near 100% coverage, compared 5G. Thus, expand across all available spectrums includi...
The current methods of communication using steganography techniques involve the use of carrier files including network protocols. The current study presents a new method of communication using steganography techniques available today, the carrier being a ping. The study will also present the most effective ways of prevention against this form of secret communication. Key-Words: steganography, i...
Based on the security of information transmission through network in the information society, the paper puts forward covert communication technology which is more reliable than the prior encryption algorithm, analyzes channel covertness and information hiding of covert communication technology based on spread-spectrum communication technology, and establishes a covert communication system inclu...
the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...
cette étude tente d’étudier et de comprendre le rôle que joue l’empathie en enseignement. lempathie y est observée en tant que modèle de communication entre l’enseignant et l’élève. de façon générale, lempathie permet dassouplir les échanges entre les personnes. dans un contexte éducatif, la qualité de la communication est associée à un vécu relationnel plus harmonieux et à un meilleur climat d...
In this paper, modulation bandwidth characteristics of InGaAs/GaAs quantum dot (QD) laser were theoretically investigated. Simulation was done by using the fourth order Runge-Kutta method. Effect of carrier relaxation life time, temperature and current density on characteristics of tunneling injection QD laser (TIL) and conventional QD laser (CL) were analyzed. Results showed that tunneling inj...
Acoustic communication is best supported at low frequency. Since the available bandwidth is less, higher order modulation techniques such as OFDM are employed. Inherent motion of the system poses stringent limitation on the synchronization issues. Thus modelling of multipath propagation especially Doppler Effect plays an important role in the efficient design of high data rate acoustic communic...
OBJECTIVES To describe and explore current practice, methods and experience of communicating carrier status information following newborn screening for cystic fibrosis (CF) and sickle cell (SC) disorders, to inform practice and further research. DESIGN Three linked qualitative studies. SETTING All nine health regions in England. PARTICIPANTS Child health screening coordinators in all Engl...
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