'900 mhz' diaporamas de présentation

Applied Cryptography

Applied Cryptography. Spring 2014. GSM and cryptography. Frequency planning. A cluster is a group of cells which uses the entire radio spectrum. The cluster size N is the number of cells in each cluster. Each cell within a cluster is allocated a distinct set of frequencies

1.09k views • 86 slides

Internet + Wireless+ M obile technologies

Internet + Wireless+ M obile technologies. Introduction. Internet+Wireless+Mobile = Going on-line anywhere, anytime and using multiple devices New opportunities, services Ubiquitous Anywhere, any time Convenient , instant connectivity Very personal

606 views • 60 slides

All about Wireless Communications

618 views • 48 slides

Pengantar Teknologi Mobile

Antonius Rachmat C, S.Kom, M.Cs. Pengantar Teknologi Mobile. Introduction. Kontrak Perkuliahan. Kredit: 2 SKS Dosen: Antonius Rachmat C, S.Kom, M.Cs Email: anton@ ti. ukdw.ac.id Web: http://lecturer.ukdw.ac.id/anton Kelas: Senin , 08.00-10.00 WIB. Deskripsi Matakuliah.

636 views • 47 slides

MOBILE COMMUNICATIONS Alexandre ELAGUINE & Mikhail BAIAKOVSKI 31.01.2002

MOBILE COMMUNICATIONS Alexandre ELAGUINE & Mikhail BAIAKOVSKI 31.01.2002. MOBILE COMMUNICATIONS. Basic principles Early analog networks Digital networks, GSM GPRS and EDGE UMTS Future networks. Wireless versus Mobile. BASIC NETWORK STRUCTURE. Propagation Mechanisms. Reflection

439 views • 33 slides

Wireless Solutions for Rural Connectivity

478 views • 32 slides

438 views • 30 slides

Introduction to Wireless Sensor Networks

Introduction to Wireless Sensor Networks. Telemetry and WSNs 24 January 2005. Organizational. Class Website. www.engineering.uiowa.edu/~ece195/2005/. Class Time. Office Hours. Review Questions. Explain how advances in MEMS have contributed to the development of WSNs

351 views • 21 slides

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Smart Grid Communications Preliminary Proposal] Date Submitted: [March 1, 2009] Source: [Scott Weikel] Company [Elster Electricity] [Robert Mason] Company [Elster Electricity]

315 views • 21 slides

Radio Technology Overview

Radio Technology Overview. Radio Basics. Terminology Familiarization with radio expressions Basic Components Transmitter Receiver Transceiver Transmitter and receiver together Generally in a single unit. Radio Basics. Full-Duplex Radio Two Frequencies Used

354 views • 21 slides

Wireless Networks

408 views • 20 slides

Cell Phone SAR max Dimbylow and Mann (1994)- 2.3 and 4.8 W/kg/gm

Cell Phone SAR max Dimbylow and Mann (1994)- 2.3 and 4.8 W/kg/gm tissue per W output at 900 MHz and 1.8 GHz. Anderson and Joyner (1995)- 0.12-0.83 W/kg Gandhi et al. (1999)- 0.13-5.41 W/kg/gm tissue at 0.6 W output (835 and 1900 MHz)

266 views • 19 slides

Margarita Malakyan PhD, Doctor of Biology Scientific Centre of Radiation Medicine and Burns,

EFFECTS OF LOW INTENSIVE 900-MHZ RF-EMR ON ANIMAL BLOOD INDICES AFTER SINGLE ACUTE OR FRACTIONAL TOTAL BODY EXPOSURE. Margarita Malakyan PhD, Doctor of Biology Scientific Centre of Radiation Medicine and Burns, Yerevan, Armenia. Background.

269 views • 19 slides

View of the rat cradle and RF coil

900-MHz MRI Probe for In Vivo Rats+: flexibility. anesthesia. detachable RF coils. Bite bar. respiratory monitor. vacuum exhaust. safety belts. detachable animal cradle. In vivo MRI of rodent heads Fits up to 350-g rat Animal is stabilized with bite bar and body restraints

387 views • 16 slides

View of the rat cradle and RF coil

900-MHz MRI Probe for In Vivo Rats+: flexibility. anesthesia. detachable RF coils. Bite bar. respiratory monitor. vacuum exhaust. safety belts. detachable animal cradle. In vivo MRI of rodent heads Fits up to 350-g rat Animal is stabilized with bite bar and body restraints

306 views • 16 slides

WELCOME TO THE SEMINAR

225 views • 16 slides

Mobile Computing

Gujarat Power Engineering and Research Institute. Mobile Computing. Prof. Maulik Patel CED, GPERI. Mobile Technologies. Global System for Mobile Communication-GSM. GSM today covers 71% of all the digital wireless market .

381 views • 15 slides

Ulf pehrsson , vice president 3 december, 2013

240 views • 13 slides

Team 3 Ashwin Shankar Upsham Dawra Samit Sura Joe Katz

Team 3 Ashwin Shankar Upsham Dawra Samit Sura Joe Katz. Abstract.

231 views • 12 slides

Broadband & Innovation

Broadband & Innovation. Georges Dabaghi Sales Director - Middle East & Africa Motorola, Home and Networks Mobility. Broadband Penetration on the rise in Middle East. Middle East Market- relatively low Broadband Penetrations

200 views • 10 slides