System and method for IQ imbalance estimation using loopback with frequency offset
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United States of America Patent
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Oct 16, 2012
Grant Date -
Dec 31, 2009
app pub date -
Jun 30, 2008
filing date -
Jun 30, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Systems and methods for estimating IQ imbalance in a communication system are provided. In various embodiments, a device is configured to perform a self-characterization. The self-characterization is performed over an RF loopback circuit. In some embodiments, a probe is transmitted over the RF loopback circuit. The probe uses a frequency offset such that an image related to one IQ imbalance is separated from an image related to another IQ imbalance. An imbalance estimate is calculated based on processing of the probe.
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