FFE Basics (Feed-Forward Equalization)

Feed-Forward Equalization (FFE) is a linear equalization technique applied on the transmitter side to shape the output signal to counteract channel impairments.

Why FFE?

• Compensates for ISI (Inter-Symbol Interference)
• Improves eye opening at receiver

FFE Tap Example:

• Pre-tap: Reduces preceding pulse interference
• Main-tap: Core signal strength
• Post-tap: Cancels succeeding symbol distortion