Block modulation
AssigneeNokia Corporation
InventorsAri Hottinen, Juha Heiskala
Life of this patent
Estimating the term…
Abstract
A device for block transmission involving a first number of subcarriers (N), comprising: storage means for storing at least one transmission matrix having a dimension equal to the first number. The transmission matrix being arranged so that the columns of the transmission matrix represent a first transmission characteristic and the rows of the transmission matrix represent a second transmission characteristic. The transmission matrix comprises a second number (k) of block submatrices, each submatrix separated by at least one row and/or column from a further submatrix by a null matrix block.
Claims22
A device for block transmission involving a first number of subcarriers (N), comprising:
- storage means for storing at least one transmission matrix having a dimension equal to the first number, the transmission matrix arranged so that the columns of the transmission matrix represent a first transmission characteristic and the rows of the transmission matrix represent a second transmission characteristic;
- and wherein the transmission matrix comprises a second number (k) of block submatrices, each submatrix separated by at least one row and/or column from a further submatrix by a null matrix block.
A device for block transmission involving a first number of subcarriers (N), comprising:
- a memory for storing at least one transmission matrix having a dimension equal to the first number, the transmission matrix arranged so that the columns of the transmission matrix represent a first transmission characteristic and the rows of the transmission matrix represent a second transmission characteristic;
- and wherein the transmission matrix comprises a second number (k) of block submatrices, each submatrix separated by at least one row and/or column from a further submatrix by a null matrix block.
A device for block transmission involving a first number of subcarriers (N), comprising:
- memory for storing at least one transmission matrix comprising a precoding matrix U of the form
- U
-
- (
- μ
- ,
- υ
- )
- =
- [
- μ
- υ
- -
- υ
- *
- μ
- *
- ]
- ⊗
- I
- d
- /
- 2
- ,
- wherein μ, ν are parameter values of the preceding matrix.
A modulator for block transmission comprising:
- an input arranged to receive an input symbol stream;
- a memory arranged to store at least one transmission matrix comprising a precoding matrix U of the form
- U
-
- (
- μ
- ,
- υ
- )
- =
- [
- μ
- υ
- -
- υ
- *
- μ
- *
- ]
- ⊗
- I
- d
- /
- 2
- ,
- wherein μ, ν are parameter values of the preceding matrix;
- and
- a processor arranged to multiply the input symbol stream by the transmission matrix to produce an output symbol stream.
A method for performing a block modulation comprising the steps of:
- receiving a input symbol stream;
- generating a transmission matrix from a precoding matrix U of the form
- U
-
- (
- μ
- ,
- υ
- )
- =
- [
- μ
- υ
- -
- υ
- *
- μ
- *
- ]
- ⊗
- I
- d
- /
- 2
- ,
- wherein μ, ν are parameter values of the preceding matrix;
- and
- multiplying the input symbol stream by the transmission matrix to produce a modulated output symbol stream.
A computer program product arranged to implement a method for performing a block modulation comprising the steps of:
- receiving a input symbol stream;
- generating a transmission matrix from a precoding matrix U of the form
- U
-
- (
- μ
- ,
- υ
- )
- =
- [
- μ
- υ
- -
- υ
- *
- μ
- *
- ]
- ⊗
- I
- d
- /
- 2
- ,
- wherein μ, ν are parameter values of the preceding matrix;
- and
- multiplying the input symbol stream by the transmission matrix to produce a modulated output symbol stream.
A device for block transmission involving a first number of subcarriers (N), comprising:
- a memory for storing at least one transmission matrix having a dimension equal to the first number, the transmission matrix arranged so that the columns of the transmission matrix represent a first transmission characteristic and the rows of the transmission matrix represent a second transmission characteristic;
- and wherein the transmission matrix comprises a second number (k) of block submatrices, each submatrix separated by at least one row and/or column from a further submatrix by a null matrix block.
A communications device for performing a block modulation comprising:
- an input arranged to receive an input symbol stream;
- a processor arranged to generate a transmission matrix from a precoding matrix U of the form
- U
-
- (
- μ
- ,
- υ
- )
- =
- [
- μ
- υ
- -
- υ
- *
- μ
- *
- ]
- ⊗
- I
- d
- /
- 2
- ,
- wherein μ, ν are parameter values of the precoding matrix;
- and
- a second processor arranged to multiply the input symbol stream by the transmission matrix to produce a modulated output symbol stream.
Dependencies are inferred from the claim text.