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100209-lecture3 - EE522 Communications Theory 2010 02 09...

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1 EE522 Communications Theory 2010. 02. 09 Instructor: Hwang Soo Lee Lecture #3 – Random Processes and Quantization
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2 Announcements Handout: Lecture #3 Notes Homework #1 is due Thursday 02/11.
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3 Random Processes A random variable has a single value. However, actual signals change with time. Random variables model unknown events. Random processes model unknown signals. A random process is just a collection of random variables. If X(t) is a random process then X(1), X(1.5), and X(37.5) are all random variables for any specific time t.
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