Telecom and Economic Growth

June 30, 2008 at 2:24 pm (Mobile, Telecommunication)
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telecom

Source: http://www.devinfo.org/facts_you_decide/8002.htm?IDX=13%27

telecom

Source: http://lirneasia.net/2007/04/telecom-sector-contributes-to-lk-economic-growth-while-prices-decline?cp=1

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Mobile Telecommunications and Economic Growth

Author

Leonard Waverman, Meloria Meschi & Melvyn Fuss

London Business School, Law and Economics Consulting Group (Waverman), University of Toronto (Fuss)

…the economic impact of communications systems by highlighting its contribution to the organisation of business life, organisation of household and community life, and productivity of firms and workers. Communications systems – particularly those that are two-way (telecoms) rather than one-way (broadcasting) – lower transaction costs and widen buyer and supplier networks. Thus, the authors claim that a solid communications network is a key contributor to social overhead capital (SOC) – roads, telephones, electricity grids, etc. – which is, in turn, crucial for economic growth…

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Macro Environment and Telecommunications

Source: http://cbdd.wsu.edu/kewlcontent/cdoutput/TR501/index.htm

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Telecommunications: The Engine for Economic Development in the New Century

Source: http://dosfan.lib.uic.edu/ERC/economics/statements/970130.html

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Satellite Services: Phone – Internet

June 22, 2008 at 5:36 pm (Mobile, Satellite)
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GPS

Satellite phone:is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell sites

http://en.wikipedia.org/wiki/Satellite_phone

Could this be the decade that the U.S. will get satellite media broadcasts to our phones? DMB, which is a method to send audio and video through satellites straight into small devices like phones and PMPs, may be touching us sooner than we think and Samsung is ready.

http://gizmodo.com/gadgets/smartphones/samsung-launches-sch+b200sph+b2000-dmb-phone-114606.php

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Mobile phone (also called a wireless phone, or cellular phone)[1] is a short-range, portable electronic device used for mobile voice or data communication over a network of specialized base stations known as cell sites

http://en.wikipedia.org/wiki/Mobile_phone

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globalstarinmarsatiridiumthurayaintelsat

Intelsat, Ltd. is the world’s largest commercial satellite communications services provider. http://www.intelsat.com

http://en.wikipedia.org/wiki/Intelsat

Globalstar is a low Earth orbit (LEO) satellite constellation for satellite phone and low-speed data communications, somewhat similar to the Iridium and Orbcomm satellite systems. http://www.globalstar.com

http://en.wikipedia.org/wiki/Globalstar

List of satellite service providers:

http://www.satellite-links.co.uk/links/ssp.html#I

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google

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Global Positioning System (GPS) is the only fully functional Global Navigation Satellite System (GNSS). Utilizing a constellation of at least 24 Medium Earth Orbit satellites that transmit precise microwave signals, the system enables a GPS receiver to determine its location, speed, direction, and time

http://en.wikipedia.org/wiki/Global_Positioning_System

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Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world

http://en.wikipedia.org/wiki/GSM

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How does satellite internet operate?

satellite internetsatellite TV

http://computer.howstuffworks.com/question606.htm

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Satellite Internet does not use telephone lines or cable systems, but instead uses a satellite dish for two-way (upload and download) data communications. Upload speed is about one-tenth of the 500 kbps download speed. Cable and DSL have higher download speeds, but satellite systems are about 10 times faster than a normal modem.

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World map of submarine cable systems

June 22, 2008 at 1:37 pm (Cable, Fixed-line)
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Cable Map

http://www.ripe.net/projects/reports/2008cable-cut/index.html

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Mediterranean Fibre Cable Cut – a RIPE NCC Analysis

Analysis by the RIPE NCC Science Group with contributions from Roma Tre University.
Editors: Rene Wilhelm, Chris Buckridge

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The history of submarine telecommunications cables goes back to 1850 when the first international telegraph link between England and France was established. Eight years later the first trans-Atlantic telegraph cable linked Europe to North America.

In the 20th century telephony became the driving force for submarine cable deployments. TAT-1, the first trans-Atlantic telephone cable, was installed in 1956; it had the capacity to transmit 36 analog phone channels simultaneously. These days fibre-optic submarine cables carry the bulk of the trans-oceanic voice and data traffic. Maximum capacity is now in the order of 1 Tb/s, equivalent to 15 million old analog phone calls. Compared to satellites, submarine cables offer higher capacity and, because of the shorter distance, feature much better latencies.

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Cable Map

http://gcaptain.com/maritime/blog/tag/undersea-cable/

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Mobile on the plane

June 21, 2008 at 11:29 am (Mobile, Satellite)
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Mobile on plane

http://web2.sys-con.com/read/446317.htm

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By: Jeremy Geelan
Oct. 23, 2007 12:00 PM
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Is This the Death-Knell for Peace and Quiet in the Skies?
For crackberries this is just the beginning of the beginning…for the rest of us it’s the beginning of the end
The proposed system utilizes an on-board base station in the plane which communicates with passengers’ own handsets. The base station – called a pico cell – is low power and creates a network area big enough to encompass the cabin of the plane. The base station routes phone traffic to a satellite, which is in turn connected to mobile networks on the ground. A network control unit on the plane is used to ensure that mobiles in the plane do not connect to any base stations on the ground. It blocks the signal from the ground so that phones cannot connect and remain in an idle state.
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How In-flight Mobile Phone Services Work

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