5. Answer the following questions about angle modulation systems. a. Explain threshold effect in FM systems, and how and how much this effect can be circumvented by threshold extension. (5 points). b. What is the objective of pre-emphasis and de-emphasis filtering in FM systems? How much the output signal-to-noise ratio can be improved with the pre-emphasis and de-emphasis filtering? (5 points).
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In FM systems, the threshold effect refers to the phenomenon where the received signal becomes noisy and distorted when the signal strength falls below a certain threshold level. This is because the demodulator cannot distinguish between the signal and the noise Show more…
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