Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2008-06-06
2011-12-20
Payne, David C. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
08081700
ABSTRACT:
A transmit power allocation method for computing a transmit beamforming W matrix for a N streams of data, the method has a first step of measuring a receive channel characteristic H matrix, a second step of decomposing the H matrix into a U matrix which is formed from the left eigenvectors of the H matrix, an Σ matrix which is a diagonal matrix formed from the square roots of the eigenvalues of said H matrix and re-ordered by strength, and a VTmatrix with rows comprising the right eigenvectors of H, such that UΣVT=H. The transmit beamforming W matrix is then formed from the re-ordered V matrix of the previous decomposition. Optional waterfilling methods for a plurality of subcarriers may then be done using either a minimum mean square error, an optimal signal to noise ratio, or any other waterfilling method which optimizes a desired metric, such as signal to noise ratio or minimum mean square error.
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Sankabathula Sailaja Dharani Naga
Vaidyanathan Karthik
Chesavage Jay A.
File-EE-Patents.com
Haider Syed
Payne David C.
Redpine Signals, Inc.
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