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hw1 - EE 5505 Wireless Communication Prof Jindal Homework 1...

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EE 5505 Prof. Jindal Wireless Communication January 21, 2010 Homework 1 Due: Thursday, January 28, 11:15 AM Please turn in your MATLAB scripts in addition to your solutions and plots. 1. 2.1 2. 2.8 3. 2.13 4. 2.19 5. Consider the downlink of a cellular system as shown in the figure. Each cell is square with a side of length 2 R , and the two base stations are located at the middle of each cell. The signal from the desired base station as well as the interference from the other base station both follow the empirical path-loss model with γ = 3, d 0 = 1m, and K = 1, and both links also suffer from log-normal shadowing with σ dB = 6 dB. In this question we ignore noise and only study the ratio between the power received from the desired base station and the power received from the interfering base station. We assume each cell transmits with the same power, so the actual value of P t is unimportant. (a) Assume the mobile is on the line between the two base stations and is a distance d away from BS 1 (which means the mobile is a distance 2 R -
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