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Tradeoff Between Source Coding And Spreading In A Multicarrier DS-CDMA System Operating Over Multipath Fading Channels With Narrow-Band Interference
White Papers For a fixed total bandwidth expansion factor, and for a fixed channel code rate, the authors' consider the problem of optimal bandwidth allocation between the source coder and the spread-spectrum unit for a multicarrier direct-sequence CDMA system...
[February 14, 2006, 23:00]
Design Of A Multiband OFDM System For Realistic UWB Channel Environments
White Papers There are many differences between real-world behavior of narrow-band and UWB systems. For narrow-band systems, these reflections will not be resolvable by the RX when the narrow-band system bandwidth is less than the coherence bandwidth of the...
[July 25, 2007, 0:00]
Could XMax Change The World Of Broadband?
News If there's no narrow-band spectrum available, that can be omitted at a loss of around 25 percent of the efficiency. There are a wide variety of trade-offs that can be made to make the system match particular needs: one mode has a powerful but very...
[November 4, 2005, 11:30]
Excite Not Worried About AOL
News That philosophy even reaches its regular narrow-band site, where a search for the New York Yankees returns a single page with a plethora of content, instead of links to multiple different pages. Forms of measurement will change in the narrow-band...
[January 25, 2000, 13:25]
A Recursive Least Square Channel Estimator For Digital Terrestrial Broadcasting System
White Papers OFDM modulation is essentially the simultaneous transmission of a large number of narrow band carriers, each modulated with a low data rate, but the total sum yielding a very high data rate. However, channel estimation is one of the problems...
[July 21, 2005, 0:00]
Tarred With Same Brush
Talkback All the providers fall in a narrow band of dissatisfaction about 2/3 of maximum. Individual scores depend on subjective problems with each so although BT is bottom it does not mean it is vastly worse than Tiscali.
[December 8, 2007, 18:38]
Could XMax Change The World Of Broadband?
Talkback If you can get 1 Mbps or more in a narrow band with low power, that will be fantastic for emergency communications which is all that is left after a disaster. Let amateur radio (ham) operators give this technology a trial.
[November 12, 2005, 17:45]
Thick Photoresist Imaging Using A Three Wavelength Exposure Stepper
White Papers The higher NA and narrow band illumination sources in these systems tends to degrade performance with thick photoresists and larger features. This paper will evaluate the performance of a novel low numerical aperture (NA), broadband g, h and i-line...
[April 30, 2004, 0:00]
Ultrawideband May Be Just Too Wide
News Wireless devices almost always operate in a narrow band of spectrum. The satellite industry and its TV and cable customers say a short-range wireless standard called ultrawideband threatens to interfere with many of their broadcasts.
[February 13, 2003, 9:41]
UK Hit By Nationwide ADSL Crash
News According to one report, over 110,000 users were affected, as well as some narrow-band unmetered customers. Tens of thousands of high-speed Internet users were unable to access the Web on Tuesday morning, because of a serious system failure on BT's...
[November 20, 2001, 15:02]
Liberty Surf Hits Out At Over-priced Internet Charges
News There is still a huge market for dial-up narrow band," he claims. French ISP Liberty Surf hits out at rip-off Internet charges this week as it launches its own unmetered service in Britain. The ISP -- which took over the X-Stream Network in March...
[May 19, 2000, 11:09]
Doubts Over WiMax's Mobile Future
Talkback We will all have to expand the limited views developed during the narrow band wireless generation. The pretention by some analysts that there needs to be a 'final' version of 802.16 for mobile applications is a bit misleading.
[May 28, 2005, 1:45]
Music Kiosks To Aid Digital Revolution
News Although TopShop will be providing a very narrow band of pop music, the kiosks will enable artists and labels to target specific types of music fan. Consumers will be given an alternative method for purchasing music when Liquid Audio rolls out its...
[March 6, 2000, 13:38]
MPs Flirt With BT Break-up
News He said there were two reasons why broadband take-up in the UK was different from in other countries: the availability of narrow-band unmetered access Internet products, and the regulations that BT had to deal with.
[June 11, 2002, 12:09]
Broadband Killer Apps Will Be Created At Home
News AOL, which as part of AOL Time Warner could put thousands of films online, said last week that many of its narrow-band users would move to broadband if only it was more affordable. One of the government's broadband advisors believes it will be...
[December 10, 2001, 14:10]
BT Launches ADSL But Says Prices Will Not Fall
News According to a survey from research firm Mercer Management, people spend far longer online with broadband compared to narrowband -- 1800 minutes per month with broadband connection compared to 450 minutes with narrow band.
[April 26, 2000, 14:25]
Lacey's Paper Round - The Week's Best IT Coverage In Print
News The Daily Telegraph reports on a BT's "realignment of our investment away from narrow band strategy.The really important thing is that we don't have to dig up the roads again, because we started laying the right type of cable five years ago: as...
[February 5, 1999, 14:03]
Australian Papers Dump Print For Digital
News One.Tel is already well advanced in building a core infrastructure capable of data delivery to a wide range of devices and Moore indicated the company favours a system similar to the highly successful Japanese i-Mode system that uses packet-based...
[July 14, 2000, 12:36]
Net Search-and-present Tool Threatens Giants
News Aeneid Corp.named after the leader of a band of Trojans who wound up creating the "new city" of Rome, demonstrated the first version of a service that will act as a "virtual report writer" for time-crunched professionals.
[January 30, 1998, 9:50]
Intel Names Next-gen Mobile Processor
News Intel will offer an 802.11b module when Centrino begins shipping, but a planned dual-band 802.11a and 802.11b module has been delayed until sometime later in the first half of the year, the company said recently.
[January 8, 2003, 13:48]
