Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-07-03
2007-07-03
Le, Lana N. (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S562100, C455S277100
Reexamination Certificate
active
10984888
ABSTRACT:
Disclosed is an apparatus for forming a downlink traffic beam in a base station that separately forms a traffic beam for each user using multiple antennas. In the apparatus, an instantaneous direction estimator detects a signal having maximum energy and an energy value from a received uplink signal. A downlink spatial correlation matrix update unit calculates a downlink spatial correlation matrix using an output value of the instantaneous direction estimator and a downlink antenna direction response characteristic. A beam vector adaptation unit outputs a downlink bean-forming vector by reflecting a phase difference between a common beam and a traffic beam from an output of the downlink spatial correlation matrix update unit.
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Le Lana N.
Roylance Abrams Berdo & Goodman LLP
Samsung Electronics Co,. Ltd.
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