Crosstalk refers to the interference that occurs when signals traveling over twisted pair cables interact, causing disturbances in the actual or victim signal.
On Basis of Direction of Propagation
- Forward Crosstalk: This type propagates in the same direction as the signal causing the disturbance, affecting the intended signal along with it.
- Backward Crosstalk: This type propagates in the opposite direction to the signal’s path, typically impacting the actual or victim signal at the far end.
On Basis of Site of Measurement
- Near-End Crosstalk (NEXT): Occurs at the source end, where the outgoing signal leaks into the incoming signal, causing mixing.
- Far-End Crosstalk (FEXT): Occurs at the destination end, where the incoming signal corrupts the outgoing signal.
On How It Is Quantified
- Power-Sum NEXT (PSNEXT): Measures crosstalk power at the near end of transmission.
- Power-Sum FEXT (PSFEXT): Measures crosstalk power at the far end of transmission.
- Power-Sum Equal-Level Crosstalk (PS-ELFEXT): Represents the combined sum of PSNEXT and PSFEXT, providing a comprehensive measure.
This classification ensures that each type is distinctly defined, allowing for clear analysis and mitigation strategies.