EE5576: Wireless Communication Systems: Homework Assignment 8 Given: April 13, 2021 Due: April 22, 2021 (11:59) Submission Instructions: Submit your Matlab files (.m) and your assignment in electronic format (.pdf) directly on Canvas Dr. Elena Bernal Mor Assistant Teaching Professor Department of Electrical and Computer Engineering Northeastern University e-mail :
[email protected] Problem 1: MATLAB exercise (60%). Consider a cell with no buffering. Consider that one session is assigned one resource. New and handoff requests are given the same priority (no admission control imple- mented). Assume that the arrival of requests follows a Poisson process with arrival rate λ, and the service time follows an exponential distribution with a resource service rate µ. a) Plot the blocking probability as a function of the number of resources allocated to the cell (consider 1 to 15 resources). Plot 4 dot-lines in the same figure for the following values of λ and µ. (40%) • Line 1: λ1 = 10 request/minute and µ1 = 4 request/minute. • Line 2: λ2 = 2λ1 request/minute and µ2 = µ1 request/minute. • Line 3: λ3 = λ1 request/minute and µ3 = 2µ1 request/minute. • Line 4: λ4 = 2λ1 request/minute and µ4 = 2µ1 request/minute. Include your MATLAB scripts with the submission. b) Comment the results obtained. (20%) Problem 2 (40%). Go back to Homework Assignment 0 and explain briefly the technical meaning of the concepts/technologies related to wireless communications that now you know but you marked in red or yellow in Homework Assignment 0 or you thought you knew but now you understand better.
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