Methods and apparatus for providing an adaptive beamforming antenna for OFDM-based communication systems
AssigneeMarvell Asia Pte Ltd
InventorHyun Soo Cheon
Life of this patent
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Abstract
Methods and apparatus for providing an adaptive beamforming antenna for OFDM-based communication systems. In one embodiment, a method includes forming a matrix (A) of cyclic prefix values and a matrix (B) of tail values from an orthogonal frequency division multiplexed (OFDM) symbol, and forming a summation matrix (S) and a difference matrix (D) from the matrix A and the matrix B. The method also includes multiplying a beamformer preset matrix (W) with the matrix S and the matrix D to determine a matrix (P) and a matrix (Q), and determining a beam identifier from the P and Q matrices.
Claims20
A method, comprising:
- forming a matrix (A) of cyclic prefix values and a matrix (B) of tail values from a received orthogonal frequency division multiplexed (OFDM) symbol;
- forming a summation matrix (S) and a difference matrix (D) from the matrix A and the matrix B;
- multiplying a beamformer preset matrix (W) with the matrix S and the matrix D to determine a matrix (P) and a matrix (Q);
- and
- determining a beam identifier from the P and Q matrices.
An apparatus, comprising:
- a first matrix forming circuit that forms a matrix (A) of cyclic prefix values from a received orthogonal frequency division multiplexed (OFDM) symbol;
- a second matrix forming circuit that forms a matrix (B) of tail values from the received orthogonal frequency division multiplexed (OFDM) symbol;
- a summation circuit that forms a summation matrix (S) from the matrix A and the matrix B;
- a difference circuit that forms a difference matrix (D) from the matrix A and the matrix B;
- a multiplying circuit that multiplies a beamformer preset matrix (W) with the matrix S and the matrix D to determine a matrix (P) and a matrix (Q);
- and
- a determination circuit that determines a beam identifier from the P and Q matrices.
An apparatus, comprising:
- means for forming a matrix (A) of cyclic prefix values and a matrix (B) of tail values from a received orthogonal frequency division multiplexed (OFDM) symbol;
- means for forming a summation matrix (S) and a difference matrix (D) from the matrix A and the matrix B;
- means for multiplying a beamformer preset matrix (W) with the matrix S and the matrix D to determine a matrix (P) and a matrix (Q);
- and
- means for determining a beam identifier from the P and Q matrices.
Dependencies are inferred from the claim text.