Assignment1

Assignment1 - EE308 Communication Systems : Assignment 1 1....

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EE308 Communication Systems : Assignment 1 1. Show that an exponential ݁ ି௔௧ starting at െ∞ is neither an energy nor a power signal for any real value of ܽ . However, if ܽ is imaginary, it is a power signal with power ܲ ൌ1 , regardless the value of ܽ . 2. Express the Fourier Transform of ݃ ሺݐሻ,…,݃ ሺݐሻ in terms of that of ݃ሺݐሻ . 3. Evaluate the following integral: (i) ׬ ݃ሺ2െݐሻߜሺ3െݐሻ݀ݐ –ஶ (ii) ׬ ݁ ௧ିଵ cos ሺݔ െ 5ሻ ߜሺݔ െ 3ሻ݀ݐ –ஶ 4. Find the Fourier Transform of ݃ሺݐሻ : 5. Find the inverse Fourier Transform of ܩሺ߱ሻ :
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6. The signals in the following figure are modulated signals with carrier cos 10ݐ . Find the Fourier
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Assignment1 - EE308 Communication Systems : Assignment 1 1....

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