DC offset cancellation in a direct conversion receiver...

Pulse or digital communications – Receivers – Automatic baseline or threshold adjustment

Reexamination Certificate

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Details

C375S343000, C375S344000

Reexamination Certificate

active

10700474

ABSTRACT:
An OFDM receiver has a DC offset estimator configured for determining a DC offset, in I and Q components of a received OFDM signal having been output by an analog front end, based on filtering prescribed subcarrier components from a preamble segment of the I and Q components. The OFDM receiver removes the determined DC offset from the I and Q components, resulting in respective corrected I and Q components having minimal DC offset.

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