'International mobile subscriber identity' presentation slideshows

EV-Surv: Electronic and Visual Signals Integration for Efficient Surveillance

EV-Surv: Electronic and Visual Signals Integration for Efficient Surveillance. Dong Xuan, Ph.D. The Department of Computer Science and Engineering The Ohio-State University http://www.cse.ohio-state.edu/~xuan

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Communication Systems 11 th lecture

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GSM Architecture

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GSM Architecture

638 views • 48 slides

Global System of Mobile Communication (2G)

Global System of Mobile Communication (2G) In 1982, the Conference of European Posts and Telegraphs (CEPT) nominated a group called the Groupe Spécial Mobile (GSM) to develop a public land mobile system that could operate across Europe with the objectives of:.

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GSM AND CDMA (WIRELESS & MOBILE COMMN.) ECE-6 TH SEM.

GSM AND CDMA (WIRELESS & MOBILE COMMN.) ECE-6 TH SEM. BY:- ER. SUKHWINDERPAL SINGH SENIOR LECTURER(ECE) GOVT. POLYTECHNIC COLLEGE FOR GIRLS LUDHIANA. GSM. GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS OPEN DIGITAL CELLULAR TECHNOLOGY USED TO TRANSMIT MOBILE VOICE AND DATA

580 views • 46 slides

17.1 Cellular Telephony

17.1 Cellular Telephony. Cellular telephony. Frequency Reuse Principle. Transmitting. Receiving. Handoff. Roaming. First Generation. Second Generation. Third Generation. Figure 17.1 Cellular system. Radius typically 1 to 12 miles Depends on population density.

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UMTS Network Level Security; Investigation on Security Improvements

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National Security, Forensics and Mobile Communications

National Security, Forensics and Mobile Communications. V Gratzer, D Naccache, D Znaty. Acknowledgment: several of the techniques and tools described here were developped by Gemplus. Permission to use these images owned by Gemplus slides was obtained from Gemplus. !!. Recent Case.

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G53SEC

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GSM Continued

GSM Continued. GSM Burst Format. Each time slot is 577us. They are (in this order) Trailing bits (3 bits) Data (57 bits) Flag (1 bit) Training sequence (26 bits) Data (57 bits) Flag (1 bit) Trailing bits (3 bits) Guard Period (8.25bit). GSM Bursts . In addition,

545 views • 29 slides

Cellular Communications

Cellular Communications. GSM/GPRS/EDGE. Groupe Speciale Mobile/Global System for Mobile. GSM Air Interface. TDMA with FDD. 200Khz channels with 200KHz guard bands GSM 900 has 124 carriers GMSK modulation, 270kbps per carrier Up to 8 users, 24.8kbps per user

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First and Second Generation

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GSM infrastructure MSC, BSC, BTS, VLR, HLR, GSGN, GSSN

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Mobile Communication

Mobile Communication. Dr. C.H. Vithalani Head of the E.C. Department A.V. Parekh Technical Institute, Rajkot. Session #1. Books. Wireless and cellular communication By Sanjay Sharma (S.K. Kataria & Sons) Wireless communications By. Rappaport (PHI)

340 views • 17 slides