'Subscriber identity module' presentation slideshows

Propagation models

Propagation models. Okumura Hata COST 231-Hata COST 231-Walfish-Ikegami. OKUMURA MODEL (Toki o ) (1968) Quasi-smooth terrain f = 100-3000 MHz link 1-100 km ref. ant. height , Terrain related parameters Effective base station antenna height Terrain undulation height ?h

847 views • 72 slides

14-760: Adv. Real-World Networks

682 views • 67 slides

Mobile Handset Cellular Network

764 views • 64 slides

Mobile Handset Cellular Network

749 views • 64 slides

Wireless Communications Security Issues, Solutions and Challenges

Wireless Communications Security Issues, Solutions and Challenges . Michel Barbeau and Jeyanthi Hall. Outline. Availability Privacy Integrity Legitimate Participants Absence of misbehavior. Security Requirements. Availability no jamming, adaptability to unforeseen topologies Privacy

1.11k views • 53 slides

WLAN Standardization in 3GPP A Tutorial

WLAN Standardization in 3GPP A Tutorial. Date: 2012-09-18. Authors:. Abstract. Overview of WLAN standardization in 3GPP. Agenda . 3GPP Introduction History of WLAN Interworking Projects Interworking Network Selection and Discovery Security Mobility Policy and charging control

640 views • 37 slides

Wireless Telecommunication Systems

Wireless Telecommunication Systems. Hanna Kalosha kalosha@rogers.com. Outline. Examlpe Coverage of GSM Networks T-Mobile (GSM-900/1800) Germany. Market GSM Overview Services Sub-systems Components DECT UMTS/IMT-2000. AT&T (GSM-850/1900) USA. How does it work?.

816 views • 34 slides

Wireless Mobile Telephony

Wireless Mobile Telephony. Arian Durresi CIS Department The Ohio State University Columbus, OH 43210 Durresi@cse.ohio-state.edu. http://www.cse.ohio-state.edu/~durresi/. Overview. Why wireless mobile telephony ? First Generation, Analog technologies Second Generation, Digital :

471 views • 32 slides

G53SEC

403 views • 30 slides

Mobile Handset Cellular Network Basics + GSM

447 views • 24 slides

Digital Security

Digital Security. Jesline James! 9cc. Contents. The CREATORS!!!! =] What is Digital Security? How does it help? Some dangers and malicious softwares Softwares/ Devices that provide protection Some D igitally S ecure D evices

290 views • 12 slides

GPS Hardware Overview

GPS Hardware Overview. Mark Friederick 2012 Davisware User Conference. GSM/GPRS GPS Device.

217 views • 9 slides