OFDM Receiver CORDIC Module by Yun Chiu

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OFDM Receiver CORDIC Moduleby Yun Chiu

• OFDM systems are sensitive to RF carrier
  frequency offset.
• Needs symbol-by-symbol compensation.

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CORDIC Module Design Summary
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Module Block Diagram

• 2-Step offset correction.
• Estimation of I and Q offset coeff.
• CORDIC rotation.

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OFDM Waveform
Preamble
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CORDIC Module Performance(2ppm of 5GHz, 802.11a)
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CORDIC Module Performance(2ppm of 5GHz, 802.11a)
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CORDIC Module Performance(20ppm of 5GHz, 802.11a)
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CORDIC Module Performance(20ppm of 5GHz, 802.11a)