Question: Quick answer will be appreciated! Consider a composite signal with initial power 50W and has the following three components: Amplitude: 10V, Frequency: 3 Hz, Phase:

Quick answer will be appreciated! Consider a composite signal with initial

Quick answer will be appreciated!

Consider a composite signal with initial power 50W and has the following three components: Amplitude: 10V, Frequency: 3 Hz, Phase: 0 degree Amplitude: 3V, Frequency: 9 Hz, Phase: 45 degrees Amplitude: 1V, Frequency: 21 Hz. Phase: 90 degrees (C) If the signal travels through a medium with attenuation -2dB, what is the signal power at the receiver? (6%) (d) Suppose the signal lasts for 30 seconds and is digitized by PCM using 256 levels. What is the minimum size of the resulted digital data? (6%)

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