ECE4607-FINAL07

ECE4607-FINAL07 - ECE 4607: Mobile and Wireless Networks...

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ECE 4607: Mobile and Wireless Networks SPRING 2007 FINAL EXAM May 3 rd 2007 Dr. Ian F. Akyildiz, Distinguished Chair Professor Broadband and Wireless Networking Laboratory School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, GA 30332 Tel.: 404-894-5141; Fax.: 404-894-7883; E_Mail: [email protected] Open Book Test (Only hard copies of class notes are allowed!!) No laptops or any other devices are permitted. Duration: 3 hrs. All questions have the same weight. Question 1 a) LEO satellites in 3G systems why are they preferred for voice traffic? b) GEO systems… for what type of traffic are they used within the 3G systems? Why? c) What are differences between AMPS and GSM system? Give 3 differences. d) Why is the NEAR FAR problem not present in GSM? e) What is the difference between registration and call establishment in a cellular network? f) What is the difference between open versus closed loop power control?
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Question 2 Consider a cellular system with a total bandwidth of 30 MHz. Each full duplex voice or
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This note was uploaded on 04/28/2008 for the course ECE 4607 taught by Professor Akyldiz during the Spring '08 term at Georgia Tech.

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ECE4607-FINAL07 - ECE 4607: Mobile and Wireless Networks...

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