a). shows a commutator diagram to describe time division multiplexing. Sketch the multiplexed signal over the range 0 to 1 mslabelling the axis and state relevant data rates.
b).A sine wave signal of amplitude 10 V is fed into a transmission line where it was noted that a sine wave of amplitude 1.5 V was reflected from the load. Determine the reflection coefficient. Based on this calculation describe how the power transferred along a transmission lien can be quantified and how data are affected by reflection.
c).The following signal is measured on a data communication channel when no data signal is applied. Discuss the significance of this using relevant communication concepts.