Figure 3.4 shows the effect of eliminating higher-harmonic components of a squ wave and retaining only a few lower harmonic components. What would the signa look like in the opposite case-that is, retaining all higher harmonics and eliminati a few lower harmonics? lo orPlie-fa Figure 3.5b shows the frequency domain function for a single square pulse. The single pulse could represent a digital 1 in a communication system. Note that an infinite number of higher frequencies of decreasing magnitudes is needed to represent the single pulse. What implication does that have for a real digital transmission system? 3.9. 3.11, IRA is 7.hit odth u Figure 3.4 shows the effect of eliminating higher-harmonic components of a squ wave and retaining only a few lower harmonic components. What would the signa look like in the opposite case-that is, retaining all higher harmonics and eliminati a few lower harmonics? lo orPlie-fa Figure 3.5b shows the frequency domain function for a single square pulse. The single pulse could represent a digital 1 in a communication system. Note that an infinite number of higher frequencies of decreasing magnitudes is needed to represent the single pulse. What implication does that have for a real digital transmission system? 3.9. 3.11, IRA is 7.hit odth u