Space-time
art alfalmeida Space time spreading
... This paper considers the downlink of a multiple-input multiple-output (MIMO) code- division multiple-access (CDMA) system based on space–time spreading (STS) using multiuser/multicode transmission. A ...
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Space time coding schemes for 4 or more antennas
... Abstract – In this paper we present a new space time transmit diversity (STTD) scheme for M≥4 transmit antennas and one receive antenna. The new diversity scheme belongs to the open loop class and consists ...
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Four-dimensional energy spectrum for space–time structure of plasma turbulence
... The model energy spectrum is constructed in a simple fash- ion using analytic expression. The model is based on various assumptions such as incorporation of the random sweeping hypothesis, no wave propagation (or no ...
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Frequency-Domain Receivers for Rate-1 Space-Time Block Codes
... [13] B. Hochwald, T. Marzetta, and C. Papadias, “A transmitter diversity scheme for wideband CDMA systems based on space-time spreading,” IEEE Journal on Selected Area in Communications, Vol. 19, No. 1, pp. ...
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SPACE-TIME ANALYSIS OF CRIME PATTERNS IN CENTRAL LONDON
... animations, space-time cubes and map matrices) with cluster analysis (spatial-temporal scan statistics and the self-organizing ...through space and time are discovered and the clustering ...
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Space-time compression and hyperlocalisation: the new flâneurs
... defines space by its social function and not so much by its materiality (Löw, ...of space and time into regions associated with specific social ...of space- time distanciation to refer ...
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An analytic algorithm for the space-time fractional reaction-diffusion equation
... In this paper, we solve the space-time fractional reaction-diffusion equation by the fractional homotopy analysis method. Solutions of different examples of the reaction term will be computed and ...
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An early warning system for space-time cluster detection
... The most popular statistical technique for testing spa- ce-time interaction with point process data was proposed by Knox (1964). Specifying a spatial and a temporal criti- cal distance, it is possible to indicate ...
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Arithmetic fuchsian groups and space time block codes
... Abstract. In the context of space time block codes (STBCs) the theory of arithmetic Fuchsian groups is presented. Additionally, in this work we present a new class of STBCs based on arithmetic Fuchsian ...
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A space-time rainfall generator for highly convective Mediterranean rainstorms
... resolution data obtained from either denser land- networks or from meteorological radar rainfall estimates will improve model operation and reliability as a numerical simulator of realistic space-time ...
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Modified Saez-Ballester scalar-tensor theory from 5D space-time
... embedding space is ...embedding space is the Einstein space sourced with whether one (or more) scalar field(s) or a negative cosmological ...Ricci-flat space-time can be replaced by a ...
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Compton scattering in noncommutative space-time at the Next Linear Collider
... In this paper we have considered the Compton scattering in the noncommutative QED and studied the various distri- butions at the NLC in the e g mode. The NC phase factor D C has contributions from ...
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Pulmonary tuberculosis in São Luis, State of Maranhão, Brazil: space and space-time risk clusters for death (2008-2012)
... the space and the space-time scan techniques were processed by controlling the occurrence of deaths by the population size in the census sectors, by age and gender distribution, with attempts to ...
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Hierarchical Bayesian space-time interpolation versus spatio-temporal BME approach
... of space-time processes are based on hard data and do not take into account any physical knowledge (soft data) for estimation ...of space-time processes. The space- time random ...
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Quasi-Orthogonal Space-Time-Frequency Trellis Codes for Mimo-OFDM Systems
... Assume that the channel is quasi-static over four symbol periods (a frame) and changes independently for each frame. The performance curves are described by means of frame error rate (FER) versus the receive SNR with a ...
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Multiscaling analysis of high resolution space-time lidar-rainfall
... a space-time rainfall model based on three-dimensional anisotropic multiplicative cas- cades taking into account scaling anisotropy between space and time characterized by exponent H and ...in ...
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Multiuser MIMO system using block space time spreading and tensor modeling
... block space– time spreading model for the downlink of MU-MIMO system based on tensor ...block, space–time spreading is formulated as a third-order tensor ...overall space–time ...
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Nonparametric dependence modelling for space-time cluster detection
... This work proposes a new non-parametric methodology based upon a non-ordinary metric: the Weighted Voronoi Distance (WVD). Although extensive theoretical dis- cussion can be found in Okabe et al. (2000) about spatial ...
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Superluminal Velocities in the Synchronized Space-Time
... holds true as well, i.e. the time in TTh, as it has been always in physics, varies in any IRF towards one side, i.e. from the past to the future. No “backward time motion” does exist. As regards the ...
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Nonlinear multidimensional scaling and visualization of earthquake clusters over space, time and feature space
... feature space becomes more diverse producing several well separated ...feature space, we can extract not only Miyake- jima event (red cluster in the center) but also the cluster of events which are ...
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