Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-03-29
2009-10-13
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S146000, C375S260000, C375S226000, C370S210000, C370S480000, C708S607000, C708S200000
Reexamination Certificate
active
07602855
ABSTRACT:
A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas. A Hermitian matrix A=HHH or A=HHHis created. A Jacobi process is cyclically performed on the matrix A to obtain Q and DAmatrixes such that A=QDAQH. DAis a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off-diagonal elements of the matrix after the real part diagonalization. U, V and DHmatrixes of H matrix are then calculated from the Q and DAmatrices. DHis a diagonal matrix comprising singular values of the H matrix.
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Koo Chang-Soo
Olesen Robert Lind
InterDigital Technology Corporation
Liu Shuwang
Puente Eva
Volpe and Koenig PC
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