Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-06-14
2005-06-14
Hudspeth, David (Department: 2681)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S455000, C455S067150, C320S118000, C320S118000, C320S118000, C320S118000, C342S455000, C342S445000, C342S412000, C342S442000, C342S434000, C342S124000, C342S200000, C342S200000
Reexamination Certificate
active
06907270
ABSTRACT:
A method and apparatus for estimating a communication channel in a wireless communication system having multiple transmitter antennas using reduced rank estimation. The method exploits redundant and/or a priori knowledge within a system to simplify the estimation calculations. In one embodiment, a covariance matrix is calculated and analyzed to determine if the channel parameters may be reduced for channel estimation. If not, all parameters are used, otherwise a reduced rank matrix is used for the calculation.
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Godsey Sandra L.
Hudspeth David
Nguyen David
QUALCOMM Inc.
Wadsworth Philip R.
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