Communications Engineer
Volume 5, Issue 2, April 2007
Volume 5, Issue 2
April 2007
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- Source: Communications Engineer, Volume 5, Issue 2, page: 2 –2
- DOI: 10.1049/ce:20070208
- Type: Article
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- Source: Communications Engineer, Volume 5, Issue 2, p. 4 –8
- DOI: 10.1049/ce:20070209
- Type: Article
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- Source: Communications Engineer, Volume 5, Issue 2, page: 9 –9
- DOI: 10.1049/ce:20070210
- Type: Article
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- Author(s): J. Urquhart
- Source: Communications Engineer, Volume 5, Issue 2, p. 10 –11
- DOI: 10.1049/ce:20070201
- Type: Article
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The communication technology space is a very positive environment, bursting with opportunities for entrepreneurs with the right approach. However, while fine technology is a good starting point, many fledging companies just don't understand the business environment or develop competitive marketing strategies. Communication technology is fast-moving world in which technically skilled entrepreneurs can make their mark. But there are many pitfalls on the road to riches, which in this paper are discussed. Broadband has opened up related areas for the entrepreneur to expand into. What potential entrepreneurs need to remember that it is not just about developing a product. It is more about developing a product that consumers see value in owning. - Author(s): D. Sandham
- Source: Communications Engineer, Volume 5, Issue 2, p. 12 –15
- DOI: 10.1049/ce:20070211
- Type: Article
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The world's largest mobile phone congress took place in Barcelona, Spain, from 12-15 February. The author reports from 3GSM. - Author(s): K. Hayler and P. Kesby
- Source: Communications Engineer, Volume 5, Issue 2, p. 16 –17
- DOI: 10.1049/ce:20070202
- Type: Article
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Mobile television is handicapped by a divergence of standards. Amidst the runners and riders, odds for DMB/DAB-IP and DVB-H has been shortening, as mobile operators place their bets. The comparison of DMB/DAB-IP and DVB-H is discussed in terms of spectrum availability and network cost. - Author(s): M. Knights
- Source: Communications Engineer, Volume 5, Issue 2, p. 18 –21
- DOI: 10.1049/ce:20070203
- Type: Article
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The Internet is changing - as it has to, because IPv4 does not support enough addresses for everyone alive today, let alone proliferating embedded and mobile devices. This paper discusses the advantages of Internet protocol version 6 (IPv6) over IPv4. The main advantage of IPv6 is the increase in the number of addresses available for networked devices, allowing, for example, each mobile phone and mobile electronic device to have its own IP address. - Author(s): R. Karimi and W. Webb
- Source: Communications Engineer, Volume 5, Issue 2, p. 22 –27
- DOI: 10.1049/ce:20070204
- Type: Article
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The pace of growth of licence-exempt devices is set to continue. DECT phones, car key-fobs, baby monitors, garage-door openers, wireless headsets, WLANs in home and offices, wireless alarms, anti-theft systems, RFID chips: are all examples of license-exempt devices. From the point of view of a spectrum regulator there are broadly two reasons why devices might be exempted from licensing. The first reason is the economic benefits of the exempted user are greater than those of alternative licensed use. The second reason is if the demand for spectrum in a given frequency band is less than the supply. The rules for management of licence-exempt devices are discussed in this paper. - Author(s): J.P. Conti
- Source: Communications Engineer, Volume 5, Issue 2, p. 28 –33
- DOI: 10.1049/ce:20070205
- Type: Article
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Some people have RFID chips implanted in their hands so they can open their doors by waving at them. A US-based company, VeriChip Corporation, is the main driving force behind this application. Called the VeriChip, each device comes in the shape of a glass capsule containing a microchip and a copper coil that works as antenna. The chip is injected with a needle just under the skin in the triceps area of the right arm. The medical reasons why anybody would want to be implanted with one of these chips are purely preventive. Other applications of RFID chips are discussed in this paper. - Author(s): H.-O. Scheck
- Source: Communications Engineer, Volume 5, Issue 2, p. 34 –39
- DOI: 10.1049/ce:20070206
- Type: Article
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Moore's Law has proven a remarkably useful rule of thumb in the semiconductor industry. But technological progress in industries that rely on partly analogue technology - such as the mobile phone industry - obeys different laws. Digital technology is about information storage and processing: Moore's Law reflects the ability to reduce the amount of energy (electrons) needed to store and read a single bit. Radio technology is about the transport of information. The reasons why Moore's Law is not applicable to analogue technology are discussed. Mobiel phones use analogue technology, which is different to the digital technology described by Moore's Law. - Author(s): J. Yates
- Source: Communications Engineer, Volume 5, Issue 2, p. 40 –45
- DOI: 10.1049/ce:20070207
- Type: Article
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The effectiveness of highly elliptical orbit (HEO) and geostationary orbit (GEO) in providing a satellite platform for the delivery of mobile multimedia content in Europe are discussed in this paper. ONDAS has conducted extensive studies comparing the merits of GEO and HEO-based systems for the delivery of satellite-based mobile multimedia in Europe, and finds that, for a European service, the economic model of the GEO-based solution is quite simply just not as cost-effective as a HEO-based system. In this paper the elevation angles that would be seen by a mobile user in London for a three satellite HEO constellation is presented. The benefits are illustrated, which shows typical satellite shadowing effects at European latitudes caused by urban development and foliage for both GEO- and HEO-based solutions, and illustrates that significant improvement in signal quality and reception achieved by the HEO satellites. - Source: Communications Engineer, Volume 5, Issue 2, p. 46 –47
- DOI: 10.1049/ce:20070212
- Type: Article
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- Source: Communications Engineer, Volume 5, Issue 2, page: 48 –48
- DOI: 10.1049/ce:20070213
- Type: Article
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Editor's letter
News
High-tech factory
It's not just about the technology
Content crowned king in Barcelona
Technology wars or horses for courses?
IPv6
Unlicensed TX
Getting under your skin
Beyond the law
HEO or GEO
What exactly is OFDMA?
Silicon hot from the oven
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