S2 - Compen/EE 362 Assignment 2 Solution Spring 2009...

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Compen/EE 362 Assignment 2 Solution Spring 2009 Problem 1 . Text, problem 2.7. Assume this means the range from 0.95 micron to 1.05 micron. Solution . Based on f = c/ ë , the band extends from or about 3*10 hz or 30,000 ghz 13 Problem 2. The Fourier relation is called the scale change property. a) Draw a triangle pulse, called p(t), versus t, that extends in time from t = -1 to t = 1 and peaks with magnitude 1 at t=0. b) Draw the triangular pulse p(t/2) versus t, showing key magnitude and time parameters. c) Does the pulse in b) have a wider or a narrower bandwidth than the pulse in a)? Solution .a, b) p(1), where it drops to 0, is at t/2 = 1, t = 2. Height is same. c) The pulse in b) would have half the bandwidth of the pulse in a).

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Problem 3 . The Shannon capacity formula for signals disturbed by Thermal noise is Where H is the bandwidth in hz, S is the received signal power, and the 00 constant N is the thermal noise power spectral density. S/HN is called
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This note was uploaded on 09/23/2009 for the course CMPEN 362 taught by Professor Johnmetzner during the Spring '09 term at Pennsylvania State University, University Park.

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S2 - Compen/EE 362 Assignment 2 Solution Spring 2009...

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