Le Nir
Isabelle Le Nir, Paris FR
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20160003039 | Systems and Methods for Computing Surface of Fracture per Volume of Rock - Systems and methods for estimating surface of fracture per volume of rock are provided. The systems include a logging tool, such as a resistivity tool, for generating a borehole image representative of segments of fractures in one or more planes and a processor for estimating surface of fracture per volume of rock (P | 01-07-2016 |
Vincent Le Nir, Flers FR
Patent application number | Description | Published |
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20100195761 | METHOD AND DEVICE FOR TRANSMITTING A SIGNAL IN A MULTI-ANTENNA SYSTEM, SIGNAL, AND METHOD FOR ESTIMATING THE CORRESPONDING TRANSMISSION CHANNELS - A method is provided for transmitting a digital signal via n transmit antennas, wherein n is strictly greater than 2. The method includes combining with a source data vector n vectors to be transmitted respectively by each of the transmit antennas by a coding matrix M with a yield equal to 1, using reference symbols known to at least one receiver whereby it is able to estimate at least three transmission channels corresponding respectively to each of the transmit antennas. The coding matrix M applies a mathematical transformation to the reference symbols prior to the transmission thereof. | 08-05-2010 |
Vincent Le Nir, Rennes FR
Patent application number | Description | Published |
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20090117862 | METHOD FOR THE MULTI-ANTENNA TRANSMISSION OF A LINEARLY-PRECODED SIGNAL, CORRESPONDING DEVICES, SIGNAL AND RECEPTION METHOD - An embodiment of invention relates to a method for the transmission of a signal formed by vectors, each vector comprising N source symbols to be transmitted, using M transmission antennas, wherein M is greater than or equal to 2. The method comprises the following steps: linearly precoding the signal using a matrix product of a source matrix formed by vectors that are organized in successive lines by a linear precoding matrix, delivering a precoded matrix; and successively transmitting precoded vectors corresponding to columns of said precoded matrix, the M symbols of each precoded vector being distributed to the M antennas. | 05-07-2009 |