AN2072 Freescale Semiconductor / Motorola, AN2072 Datasheet - Page 28

• Manufacturer Part Number: AN2072
• Description: AN2072, Decision Feedback Equalizer for StarCore-Based DSPs
• Manufacturer: Freescale Semiconductor / Motorola

Results
Figure 10. Real Part of the DFE Feedback Tap
Figure 11. Imaginary Part of the DFE Feedback Tap
These results show that the DSP and the Matlab results agree within the allowable error range of 16-bit arithmetic.
The X axis represents the filter taps and the Y axis represents the magnitude of each filter tap. Note that the DSP
feedback filter taps must be conjugated before they are used. The frequency response of the feedback and the feed-
forward filter obtained from the DSP implementation closely match the theoretical Matlab result. Storing the
Decision Feedback Equalizer for StarCore™-Based DSPs, Rev. 1
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