Method for the multiple-antennae emission of a signal by unitary space-time codes, receiving method, and corresponding signal
AssigneeFrance Telecom
InventorsVincent Le Nir, Maryline Holard
Life of this patent
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Abstract
An embodiment of the invention relates to a method for sending a signal formed by successive vectors each comprising N symbols to be sent, and implementing at least two transmitter antennas. A distinct sub-matrix is associated with each of said antennas, said sub-matrices being obtained by subdivision of a unitary square matrix, and each of said antennas sends sub-vectors, obtained by subdivision of said vectors, respectively multiplied by said sub-matrices so as to form, as seen from a receiver, a single combined signal representing the multiplication of said vectors by said unitary matrix.
Claims11
A method for sending a signal formed by successive vectors each comprising N symbols to be sent, and implementing at least two transmitter antennas,
- wherein a distinct sub-matrix is associated with each of said antennas, said sub-matrices being obtained by subdivision of a unitary square matrix, and each of said antennas sends sub-vectors, obtained by subdivision of said vectors, respectively multiplied by said sub-matrices,
- so as to form, as seen from a receiver, a single combined signal representing the multiplication of said vectors by said unitary matrix.
A method for the reception of a signal corresponding to the combination of contributions of each of at least two transmitter antennas, a distinct sub-matrix being associated with each of said antennas, said sub-matrices being obtained by subdivision of a unitary square matrix, wherein each of said antennas sends sub-vectors, obtained by subdivision of said vectors, respectively multiplied by said sub-matrices, and wherein the signal forms, seen from a receiver, a single combined signal representing the multiplication of said vectors by said unitary matrix, wherein the method implements at least one receiver antenna, receives said single combined signal on each of said receiver antennas, and decodes said single combined signal by means of the decoding matrix corresponding to a matrix that is the conjugate transpose of said unitary matrix.
A signal corresponding to the combination of contributions of each of at least two transmitter antennas, a distinct sub-matrix being associated with each of said antennas, said sub-matrices being obtained by subdivision of a unitary square matrix, wherein each of said antennas sends sub-vectors, obtained by subdivision of said vectors, respectively multiplied by said sub-matrices, and wherein the signal forms, seen from a receiver, a single combined signal representing the multiplication of said vectors by said unitary matrix.
Dependencies are inferred from the claim text.