'Radio channel' diaporamas de présentation

Generation Roadmap for Cellular Telephony

Generation Roadmap for Cellular Telephony. Prepared by: MIHIR KUMBHAKAR AGM(CMTS). Dated:10.03.07. Wireless technology is accelerating very fast. It is quickly moving into 1G,2G,2.5G,3G ,4G and NGN. 1 st Generation.

842 views • 67 slides

Cellular Wireless Networks

Cellular Wireless Networks. Dr. R. K. Rao. Early Mobile Systems. Objectives of Early Mobile Radio Systems Achieve large coverage area Used single high power transmitter Impossible to reuse frequency without interference

1.2k views • 64 slides

Mobile Computing

Mobile Computing. GSM. GSM: System Architecture. Overview of GSM Network Infrastructure. Um. A-bis. A. SS 7. BTS. BSC. MSC/VLR. PSTN/ISDN. X.25. MS. HLR/AUC. OMC. Data Terminal. Operations Terminal. Mobile Stations. Radio sub-system. Network sub-system. PSTN/ISDN.

737 views • 62 slides

AWIN SYSTEM

AWIN SYSTEM. familiarization training for. Arkansas Department of Health Users. Course Objectives. Understand how to operate the type of radio commonly used by ADH on the AWIN System Understand the terminology used on the AWIN System

721 views • 54 slides

WCDMA Technology Past, Present and Future

WCDMA Technology Past, Present and Future. Part II: CDMA Technology Overview. Part II: CDMA Technology Overview. Introduction to Wireless Communication Radio Channel Characteristic Modulation Basic Concepts to Mobile Communication CDMA Technology Overview History of CDMA

1k views • 53 slides

Mobile Computing

Mobile Computing. GSM Global System For Mobile Communication. Cellular Concept. Base stations (BS): implement space division multiplex Each BS covers a certain transmission area (cell) Each BS is allocated a portion of the total number of channels available

918 views • 52 slides

OMQ000001 GPRS Principle

OMQ000001 GPRS Principle. ISSUE 2.0. 3G. 2.5G. 2. Mbps. IMT-2000. 384. kbps. EDGE. 2G. 115. kbps. GPRS. 57.6. kbps. HSCSD. 9.6. kbps. GSM. GSM Development Evolution. General Packet Radio Service (GPRS) is a packet oriented Mobile Data Service available to users of

575 views • 44 slides

VoIP beyond calling grandma: 3 projects

VoIP beyond calling grandma: 3 projects. Henning Schulzrinne Dept. of Computer Science, Columbia University, New York hgs@cs.columbia. edu (with Jong Yul Kim, Wonsng Song, Omer Boyaci , Supreeth Subramanya and others ) VoIP Conference & Expo 2008 October 24, 2008. Overview.

557 views • 42 slides

National Communications System

National Communications System. Dan Currie Eastern Regional Outreach Coordinator GETS/WPS Program Phone: 215-343-8767 dan.currie@associates.hq.dhs.gov danielcurrie@comcast.net. Assuring Communications During An Emergency. National Communications System. 1993- Present. FRP Comm Annex

370 views • 27 slides

KART RADIO PROCEDURE TRAINING

268 views • 26 slides

EELE 5490, Fall, 2009 Wireless Communications

EELE 5490, Fall, 2009 Wireless Communications. Ali S. Afana Department of Electrical Engineering. Class 10 Dec. 20 h , 2009. Duplexing. It is sharing the media between two parties . If the communication between two parties is one way, the it is called simplex communication .

355 views • 23 slides

Communications Interoperability Solutions By TechStart, LLC

Communications Interoperability Solutions By TechStart, LLC.

269 views • 22 slides

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

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ Recommendations for the 3c Channel Model Subgroup ] Date Submitted: [13 May, 2005] Source: [Su-Khiong Yong] Company [Samsung Advanced Institute of Technology (SAIT)]

268 views • 12 slides

GPRS General Packet Radio Service

GPRS General Packet Radio Service. Group members: Lee Chun Keat(A108613) Loo Pei Yee(A108958) Sit Mun Hon (A108941). Introduction. Packet switched. Wireless communications service. Based on GSM communication. Known as GSM-IP.

284 views • 12 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: [ Recommendations for the 3c Channel Model Subgroup ] Date Submitted: [13 May, 2005] Source: [Su-Khiong Yong] Company [Samsung Advanced Institute of Technology (SAIT)]

168 views • 12 slides

Formula One EE

Formula One EE. Darren Navaroli JJ Revuelta. Background. UF Formula One Team Annual design competition Steering wheel heads-up display Other electronic systems. Top Level. 7-Segment LED displays Gear Steering wheel LCD displays critical vehicle data 2 Way Radio system in driver helmet

274 views • 9 slides

PRESS AND HOLD THE DOWN ARROW KEY until the GREEN light on the remote turns RED.

154 views • 8 slides

FCC Narrowbanding Overview

FCC Narrowbanding Overview. What is a radio channel? What is narrowbanding? What are the FCC deadlines?. The Radio Spectrum. Land Mobile Radio Channels. Channels licensed at 25 kHz bandwidth. 25 kHz. 25 kHz. Center Frequency 462.4750 MHz. Center Frequency 462.5000 MHz.

177 views • 8 slides

real estate sites in india

91 views • 6 slides

Here are some tips for preventing heat illness:

Here are some tips for preventing heat illness:. Get used to working in the heat gradually. For example, if the weather suddenly turns hot or you are transferred to a hot environment, take it easy until you are accustomed to the temperature.

145 views • 5 slides