Robust transmit/feedback alignment
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United States of America Patent
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May 7, 2013
Grant Date -
Sep 8, 2011
app pub date -
Mar 5, 2010
filing date -
Mar 5, 2010
priority date (Note) -
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Abstract
Performing digital predistortion (DPD) for widely spaced narrowband signals, such as the signal used in multi-carrier GSM, can be very difficult. Here, a system is provided the performs DPD for widely spaced narrowband signals. In particular, this system uses a polynomial curve for values of a cross-correlation function (above a predetermined threshold) to determine a delay estimate, which allows for a more robust and accurate system.
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