Results 291 to 300 of about 777,148 (334)
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Time delay in tunneling: Transmission and reflection time delays
Physical Review A, 1988The problem of time delay in one-dimensional quantum-mechanical scattering by a potential barrier is studied in the framework of time-dependent scattering theory. It is shown how the concept of sojourn time can be used to define three separate time delays: the time delay for transmission through the barrier, the time delay for reflection, and the total
David M. Wardlaw, Wojciech Jaworski
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Transmission delay and echo suppression
IEEE Spectrum, 1970We are all aware that radio communication is not instantaneous. With the coming of satellite communication we have fallen prey to some of the consequences of telephony with long propagation time. So it is that when one person speaks to another via satellite link, he must wait perhaps 600 ms for a rejoinder.
George K. Helder, Richard G. Gould
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Transmission delay measurement for converter
SPIE Proceedings, 2010This paper presents two various methods of transmission delay measurement for converter. One is group delay measurement method for multi-lever converter by means of high performance vector network analyzer. The other is envelope method used to determine the absolute delay of a converter using fast sampling scope.
Xiaohui Li +3 more
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The transmission zeros of systems with delays†
International Journal of Control, 1982In this paper we study the properties of the zeros of a system with general delays in the input, state and control variables. The main result of this paper shows that the zeros of the transfer function are always zeros of the system matrix, with of at least the same multiplicity moreover, when the system is canonical, the zeros of the system matrix are
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Bounds on Transmission Delays for the CCRA.
1981Abstract : In this paper, we are concerned with the per packet transmission delays induced by the Capetabakis collision resolution protocol for infinitely large number of identical bursty users. We first correct the existing lower and upper bounds on the expected per packet transmission delay E(D).
P. Papantoni-Kazakos +1 more
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Impact of transmission delay in audiovisual communications
International Journal of Satellite Communications, 1995AbstractIn this paper, the design and results are presented of an experimental study which was conducted in order to assess subjectively the impact of transmission delay in audiovisual communications. This study was undertaken using two 64 kb/s videotelephones which were connected over links incorporating simulated one‐way circuit propagation delays of
Franklin L. Corcoran +2 more
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Fitts' Law with transmission delay
Ergonomics, 1992It is shown that a modified form of Fitts’ Law applies when there is a transmission delay between control movements and feedback of system response to the operator. The model predicts, and experiments verify, that a multiplicative relationship holds between movement time, Index of Difficulty (ID), and transmission delay. Movement time at constant ID is
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Transmission delays in hardware clock synchronization
IEEE Transactions on Computers, 1988Various methods, both with software and hardware, have been proposed to synchronize a set of physical clocks in the system. Software methods are very flexible and economical but suffer an excessive time overhead, whereas hardware methods require no time overhead but are unable to handle transmission delays in clock signals.
Parameswaran Ramanathan, Kang G. Shin
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Effects of transmission delay in audiovisual communication
Electronics and Communications in Japan (Part I: Communications), 1994AbstractTo provide audiovisual communication such as television telephone and television conference economically and efficiently, high efficiency coding, satellite communication and asynchronous transfer mode (ATM) are considered for introduction to the communication network.
Takaaki Kurita +2 more
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Delayed transmission/reflection ratiometric reflectometry
SPIE Proceedings, 2009A new Time Division Multiplexing (TDM) optical fiber interrogation system for distributed Fiber Bragg Gratings (FBGs), designated as Delayed Transmission/Reflection Ratiometric Reflectometry (DT3R), is presented. The Bragg wavelength shift of FBG, which varies according to temperature or strain, is estimated as the ratio of transmittance and ...
Masayuki Nakano +5 more
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