Results 261 to 270 of about 1,354,784 (303)

Linear dispersion over time and frequency

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
High rate linear dispersion codes (LDC) for space time channels can support arbitrary numbers of transmit and receive antennas. In contrast to the one-to-one transformations used in interleaving, these codes disperse data in linear combinations over space and time. To improve performance of orthogonal frequency division multiplexing (OFDM) for wireless
null Jinsong Wu, S.D. Blostein
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Concatenated codes over fading dispersive channels

IEEE International Conference on Communications, World Prosperity Through Communications, 2003
Concatenated codes using short RS (Reed-Solomon) codes with CI (channel erasure information) and different outer codes are compared. It is shown that CI improves the performance of RS codes over fading dispersive channels at small values of signal-to-noise ratios (SNR >
K. Mokrani, S.S. Soliman
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The Dispute over Dispersion

2000
Although by the early 1830s the wave theory of light had demonstrated its superior explanatory power in accounting for many optical phenomena, it was not without obstacle. The phenomenon of dispersion (light of different colors suffering different degrees of refraction in a prism) was still problematic for the wave theory.
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Modeling Over-Dispersed Microbiome Data

2018
However, count data is not purely relative—the count pair (1, 2) carries different information than counts of (1000, 2000) even though the relative amounts of the two components are the same.
Yinglin Xia, Jun Sun, Ding-Geng Chen
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Atmospheric dispersal capacity over North India

Theoretical and Applied Climatology, 1994
In this paper the dispersal capacity of the atmosphere has been determined over North India by studying spatial variations of inversions, isothermals, lapse conditions, mixing heights and ventilation coefficients. Seasonal variations of these parameters have also been studied.
D. V. Viswanadham, V. V. S. N. Pinaka Pani   +1 more
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Blind Multiuser Detection Over Highly Dispersive CDMA Channels

IEEE Transactions on Communications, 2004
This paper addresses blind multiuser detection in a direct-sequence code-division multiple-access (DS-CDMA) network in presence of both multiple-access interference and intersymbol interference. In particular, it considers a DS-CDMA system where K out of N users are transmitting; the N admissible spreading codes are known, and so is the code of the ...
BANDIERA, Francesco, RICCI, Giuseppe, M. K. VARANASI   +2 more
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The over-dispersion between cells of chromosomal aberrations

Journal of Theoretical Biology, 1979
Abstract A survey of the literature suggests that random dispersion of radiation induced aberrations occurs only when uniform fields of predominantly low LET radiations act on cell populations which are homogeneous with regard to cell type, cycle stage and intrinsic radiosensitivity.
D, Couzin, D G, Papworth
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Short-range atmospheric dispersion over a heterogeneous surface—I. Lateral dispersion

Atmospheric Environment (1967), 1986
Abstract Results are presented from a series of diffusion trials in which a tracer gas, sulphur hexafluoride, was released from an elevated point source over the heterogeneous surface of the Canadian Precambrian Shield. The experimental procedures used in the sampling and analysis of the tracer gas, and in the collection of supporting meteorological ...
P.A. Davis, A. Reimer, S.K. Sakiyama, P.R. slawson   +3 more
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Shadows over screening mammography dispersed

Clinical Radiology, 1990
T, Mathiesen, H, Flensburg
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Airflow and Dispersion over Complex Terrain

1989
To exploit recent experimental and theoretical research on the air flow over terrain with moderate-to-low slopes, a code for widespread use on a personal computer has been developed. The basis of the analysis used in the code depends primarily on Fourier transformation of both the equations of motion and the underlying terrain.
D. J. Carruthers, J. C. R. Hunt, R. J. Holroyd   +2 more
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