EEN404_09fall_final

EEN404_09fall_final - EEN 404 - Communication Systems -...

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Unformatted text preview: EEN 404 - Communication Systems - Fall 2009 1 Final Exam – December 8, 2009 Closed book, close note, but a cheat sheet of letter size is allowed. Please be rigorous and precise; show your work to get points. NAME: STUDENT ID: GOOD LUCK! EEN 404 - Communication Systems - Fall 2009 2 Total points: 100 Duration: 2.5 hours Problem Score 1 (15pts) 2 (15pts) 3 (20pts) 4 (15pts) 5 (15pts) 6 (20pts) Total (100pts) EEN 404 - Communication Systems - Fall 2009 3 1. (15 points) Given the random binary sequence 0110, provide waveform sketches for a) NRZ change, b) split phase, and c) unipolar RZ EEN 404 - Communication Systems - Fall 2009 4 2. (15 points) A message signal is given by m ( t ) = 2Λ( t- 4 T 4 T )- 1. The message signal is sampled with a sampling period equal to T . (a) If the message samples are transmitted using PAM with a pulse width τ = T/ 4, determine and sketch the transmitted signals in the interval 0 ≤ t ≤ 4 T ....
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This note was uploaded on 10/28/2010 for the course EEN 404 taught by Professor X.cai during the Spring '10 term at University of Miami.

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EEN404_09fall_final - EEN 404 - Communication Systems -...

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