Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-10-30
2007-10-30
Nguyen, Quynh H. (Department: 2614)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S025000, C455S137000, C455S550100, C455S561000, C455S562100, C455S575500, C455S575700
Reexamination Certificate
active
10384602
ABSTRACT:
Antenna techniques particularly for orthogonal frequency division multiplexed (OFDM) communications systems. A signal processing system determines weights for an adaptive antenna, the antenna including plural antenna elements each receiving a signal including plural subcarriers. The system includes plural inputs for receiving signals from the antenna elements, a time-to-frequency domain transformer for each input for transforming the signal from each input to a plurality of subcarrier signals, a first weight determiner coupled to the inputs, before the time-to-frequency domain transformer in the signal path, and configured to determine a first set of weights, one for each input, and a second weight determiner coupled to the first weight determiner and configured to determine, from the determination of the first set of weights, at least one second set of weights including a frequency-domain weight for a subcarrier signal derived from each of the inputs.
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Matsuoka Hidehiro
Sun Yong
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