June 30, 2008 at 2:24 pm (Mobile, Telecommunication)
Tags: Mobile, telecom infrastructure
Source: http://www.devinfo.org/facts_you_decide/8002.htm?IDX=13%27
Source: http://lirneasia.net/2007/04/telecom-sector-contributes-to-lk-economic-growth-while-prices-decline?cp=1
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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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June 25, 2008 at 1:34 pm (Uncategorized)
http://www.nytimes.com/2007/07/22/business/yourmoney/22rwanda.html?pagewanted=1&_r=1&ei=5070&em&en=09011bc3623d42f2&ex=1185249600
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Africa, Offline: Waiting for the Web
Published: July 22, 2007
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Attempts to bring affordable high-speed Internet service to the masses have made little headway on the continent. Less than 4 percent of Africa’s population is connected to the Web; most subscribers are in North African countries and the republic of South Africa.
A lack of infrastructure is the biggest problem. In many countries, communications networks were destroyed during years of civil conflict, and continuing political instability deters governments or companies from investing in new systems. E-mail messages and phone calls sent from some African countries have to be routed through Britain, or even the United States, increasing expenses and delivery times. About 75 percent of African Internet traffic is routed this way and costs African countries billions of extra dollars each year that they would not incur if their infrastructure was up to speed.
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June 22, 2008 at 5:36 pm (Mobile, Satellite)
Tags: GPS, GSM, Satellite
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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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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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?
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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June 22, 2008 at 2:04 pm (Internet)
Tags: internet map
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June 22, 2008 at 1:37 pm (Cable, Fixed-line)
Tags: submarine cable, Telecommunication
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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http://gcaptain.com/maritime/blog/tag/undersea-cable/
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June 21, 2008 at 11:29 am (Mobile, Satellite)
Tags: Mobile, wireless
http://web2.sys-con.com/read/446317.htm
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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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June 21, 2008 at 10:37 am (Internet)
Tags: Internet, network
http://www.technologyreview.com/Infotech/18944/?a=f
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By Duncan Graham-Rowe
Tuesday, June 19, 2007
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Routing traffic through peer-to-peer networks could stave off Internet congestion, according to a new study.
Tangled web: The image above shows the hierarchical structure of the Internet, based on the connections between individual nodes (such as service providers). Three distinct regions are apparent: an inner core of highly connected nodes, an outer periphery of isolated networks, and a mantle-like mass of peer-connected nodes. The bigger the node, the more connections it has. Those nodes that are closest to the center are connected to more well-connected nodes than are those on the periphery.
Credit: Lanet-vi program of I. Alvarez-Hamelin et al.
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June 21, 2008 at 6:13 am (Electric Car, Technology)
Tags: electric car, Technology
http://www.businessweek.com/innovate/content/jun2008/id20080616_955452.htm?chan=rss_topStories_ssi_5
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by Matt Vella
June 16, 2008, 12:32PM EST
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The Electric Car Lives
Backed by U.S. venture capital, Norwegian company Think is betting its Ox concept vehicle can prove the electric car’s time has finally arrived
Clean, quiet, and relatively profitable to produce, electric vehicles have had a rough start in the U.S.: Five years after General Motors (GM) nixed its innovative EV1 electric car program, just a handful of automakers have committed to making and selling electric vehicles on a mass scale any time soon.
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