Calibration methods and structures in wireless communications systems
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United States of America Patent
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Jun 24, 2008
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N/A
app pub date -
Jan 7, 2004
filing date -
Feb 14, 2003
priority date (Note) -
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Abstract
Calibration methods and structures are provided for wireless communications devices that compensate across a signal bandwidth for relative gain and phase errors between spatial communication channels while utilizing existing transceiver structures and facilitating the use of frequency-domain spatial processing. The methods and structures are directed to time-division duplex (TDD) systems, and are particularly suited to those that incorporate orthogonal frequency division multiplexing (OFDM).
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