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Why does DFE feedback filter matters?

Why does DFE feedback filter matters?
  1. What is DFE decision feedback equalizer?
  2. What is DFE in digital communication?

What is DFE decision feedback equalizer?

The Decision Feedback Equalizer (DFE) is a form of non-linear equalization which relies on decisions about the levels of previous symbols (high/low) to correct the current symbol. This allows the DFE to account for distortion in the current symbol that is caused by the previous symbols.

What is DFE in digital communication?

Decision Feedback Equalization (DFE)

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