Results 171 to 180 of about 95,453 (217)

Microwave Propagation on Acupuncture Channels

Acupuncture & Electro-Therapeutics Research, 2006
Quantitative studies on functional state of acupuncture points and meridians have been done mostly by electrical measurement that requires the contact of the electrode on skin and is subject to pressure, humidity, etc. In this study, a new modality of using microwave was investigated.
Michael A, Krevsky, Ekaterina S, Zinina, Yuri, Koshurinov, Aleck M, Ovechkin, Yuri A, Tkachenko, Wantaek, Han, Sang-Min, Lee, Gilwon, Yoon   +7 more
openaire   +2 more sources

A Markov model for the mobile propagation channel

IEEE Transactions on Vehicular Technology, 2000
A finite-state Markov model is fitted to the mobile propagation channel by the use of contingency tables. Narrow-band Rayleigh and Ricean fading are considered in detail, but the techniques extend to other types of fading. Several criteria may indicate that a first-order finite-state Markov model sufficiently characterizes the channel behavior.
BABICH, FULVIO, LOMBARDI G.
openaire   +2 more sources

The indoor radio propagation channel

Proceedings of the IEEE, 1993
In this tutorial survey the principles of radio propagation in indoor environments are reviewed. The channel is modeled as a linear time-varying filter at each location in the three-dimensional space, and the properties of the filter's impulse response are described. Theoretical distributions of the sequences of arrival times, amplitudes and phases are
openaire   +1 more source

Flame Propagation in Channels: Steady and Pulsating Propagation

42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004
The structure, dynamics and stability of twodimensional ∞ame fronts propagating in channels of arbitrary width is studied, accounting for heat losses by conduction to the walls, an imposed Poiseuille ∞ow and difierential difiusion efiects. Our primary objective is to determine within the ∞ammable regions, the conditions that result in steady ...
Moshe Matalon, Changrong Cui, Thomas Jackson   +2 more
openaire   +1 more source

MIMO Propagation Channel Modeling

IEICE Transactions on Communications, 2005
This paper provides an overview of research in channel modeling for multiple-input multiple-output (MIMO) data transmission focusing on a radio wave propagation. A MIMO channel is expressed as an equivalent circuit with a limited number of eigenpaths according to the singular-value decomposition (SVD).
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Statistical analysis and characterization of the indoor propagation channel

IEEE Transactions on Communications, 2000
IEEE TRANS.
BABICH, FULVIO, LOMBARDI G.
openaire   +2 more sources

Ultra-Wide-Band Propagation Channels

Proceedings of the IEEE, 2009
Understanding ultra-wide-band (UWB) propagation channels is a prerequisite for UWB system design as well as communication-theoretic and information-theoretic investigations. This paper surveys the fundamental properties of UWB channels, pointing out the differences to conventional channels. If the relative bandwidth is large, the propagation processes,
openaire   +1 more source

Quantum signal propagation in depolarizing channels

IEEE Transactions on Information Theory, 2002
Summary: Let \(X\) be an unbiased random bit, let \(Y\) be a qubit whose mixed state depends on \(X\), and let the qubit \(Z\) be the result of passing \(Y\) through a depolarizing channel, which replaces \(Y\) with a completely random qubit with probability \(p\). We measure the quantum mutual information between \(X\) and \(Y\) by \(T(X; Y)=S(X)+S(Y)-
openaire   +2 more sources

Propagation channel cluster characteristics

2007 IEEE Antennas and Propagation Society International Symposium, 2007
In this paper, propagation channel cluster characteristics, such as azimuth angle spread, lifetimes, and polarization properties, were analysed. All the analysed data was measured in typical urban microcellular environment, and the parameters of the clusters were extracted manually after beamforming processing. The AS difference between LOS and NLOS in
Veli-Matti Kolmonen, Jari Salo, Lasse Vuokko, Pertti Vainikainen   +3 more
openaire   +1 more source

Flame propagation in an enclosed channel

Combustion, Explosion and Shock Waves, 1987
In this paper the authors attempt is made to model mathematically, on the basis of sufficiently complete nonstationary Navier-Stokes equations, the process of laminar flame propagation for a compressible, viscous, heat conducting, combusting gas mixture in a closed pipe with a rectangular cross section under conditions of both zero gravity and an ...
G. M. Makhviladze, V. I. Melikhov, O. I. Melikhov   +2 more
openaire   +1 more source