Millimeter wave channel estimation method
AssigneeIndustrial Technology Research Institute
InventorsHsin Yuan Lo, Shang-Ho Tsai, Kuo Chen Ho
Life of this patent
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Abstract
A millimeter wave channel estimation method comprises sending signals through a millimeter wave channel according to a first beamforming matrix, performing a channel estimation on the millimeter wave to generate a first measured matrix, and estimating and obtaining at least one angle of departure of the millimeter wave channel according to the first measured matrix and an angle compressive sensing matrix. The first beamforming matrix comprises a plurality of first beamforming vectors, and the first beamforming vectors respectively corresponds to a plurality of first beamforming patterns. The first measured matrix comprises a plurality of first measured parameters respectively corresponding to the first beamforming vectors.
Claims10
A millimeter wave channel estimation method, comprising:
- sending signals through a millimeter wave channel according to a first beamforming matrix, with the first beamforming matrix comprising a plurality of first beamforming vectors, and the first beamforming vectors respectively corresponding to a plurality of first beamforming patterns;
- performing a channel estimation on the millimeter wave channel to generate a first measured matrix, with the first measured matrix comprising a plurality of first measured parameters respectively corresponding to the first beamforming vectors;
- and
- estimating and obtaining at least one angle of departure of the millimeter wave channel according to the first measured matrix and an angle compressive sensing matrix;
- wherein the millimeter wave channel estimation method further comprising generating the first beamforming matrix, wherein generating the first beamforming matrix comprises:
- creating a basic compressive sensing matrix;
- performing a least squares estimation on the basic compressive sensing matrix to obtain a first least squares matrix;
- performing normalization on the first least squares matrix to obtain a normalized matrix;
- performing another least squares estimation on the normalized matrix to obtain a second least squares matrix;
- and
- multiplying the second least squares matrix by an inverse matrix of an angle matrix to obtain the first beamforming matrix.
A millimeter wave channel estimation method, comprising:
- receiving signals from a millimeter wave channel according to a first beamforming matrix to generate a first measured matrix;
- and
- estimating and obtaining at least one angle of arrival of the millimeter wave channel according to the first measured matrix and an angle compressive sensing matrix;
- wherein the first beamforming matrix comprises a plurality of first beamforming vectors respectively corresponding to a plurality of first beamforming patterns, and the first measured matrix comprises a plurality of first measured parameters respectively corresponding to the first beamforming vectors;
- wherein the millimeter wave channel estimation method further comprising generating the first beamforming matrix, wherein the step of generating the first beamforming matrix comprises:
- creating a basic compressive sensing matrix;
- performing a least squares estimation on the basic compressive sensing matrix to obtain a first least squares matrix;
- performing normalization on the first least squares matrix to obtain a normalized matrix;
- performing another least squares estimation on the normalized matrix to obtain a second least squares matrix;
- and
- multiplying the second least squares matrix by an inverse matrix of an angle matrix to obtain the first beamforming matrix.
Dependencies are inferred from the claim text.