Carrier frequency offset compensation in beamforming systems
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United States of America Patent
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May 27, 2014
Grant Date -
May 2, 2013
app pub date -
Oct 28, 2011
filing date -
Oct 28, 2011
priority date (Note) -
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Abstract
A method for communicating signals in an ultra high bandwidth system that compensates for carrier frequency offset is provided. A baseband transmit signal having a plurality of data bits is generated. The baseband transmit signal is upconverted to a radio frequency (RF) transmit signal using a first local oscillator signal having a first carrier frequency. An offset cancellation for the offset between the first carrier frequency and a second carrier frequency for a second local oscillator signal that is used to downconvert an RF receive signal is calculated. The offset cancellation is applied to a plurality of phase rotators, and the RF transmit signal is transmitted over a phased array.
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