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Date Published: Oct 2009 * * * * * *
Interesting sites and useful resources
| ACA |
Australian Communications Authority.
Frequently
asked questions (2005). Wireless local area networks in
the 2.4 GHz band. Accessing the public telecommunications
network and related issues...
|
| Analog Devices |
Wireless
Short-Range Devices: Designing a Global License-Free System
for Frequencies < 1 GHz (PDF) Designers of SRD wireless
systems need to use great care in choosing the radio’s
communication frequency. In most cases, the choice is limited
to those portions of the spectrum that allow license-free
operation given that certain specifications and conditions on
usage are met... |
| ELPRO Technologies |
2.4 GHz
vs 900/869 MHz Performance of Different Frequency Bands.
This article looks at the principles of radio technology to
explain the differences in performance between different radio
bands. It explains the different characteristics in an
industrial environment between the common 2.4GHz ISM band and
the lesser used 900 and 869 MHz bands. |
| ERO |
European Radiocommunications Office.
The
European Table Of Frequency Allocations And Utilisations
Covering The Frequency Range 9 KHz To 275 GHz (PDF)
|
| ETSI |
European Telecommunications Standards Institute |
| Federal Communications
Commission (FCC) |
Telecom Glossary
Wireless
Telecommunications Bureau
Government
Telecommunications Sites in Other Countries Links to
government telecommunications and broadcast sites numerous
countries around the world. |
| GSM
Association |
GSM Association |
| Hong Kong University
Telecommunications Research Project |
Spectrum
Management Introduction Introduction, Management of the
Spectrum, Frequency Allocation, Licensing of Spectrum Use,
Spectrum Management & EMC, Licence Fees & Spectrum
Pricing, Broadband & Convergence |
| HowStuffWorks |
How
the Radio Spectrum Works All your life you have heard
about "AM Radio" and "FM radio",
"VHF" and "UHF" television, "Citizens
Band Radio", "Short Wave radio" and so on. Have
you ever wondered what all of those different names really
mean? In this edition of How Stuff Works we will look at the
radio spectrum and see what is really going on! |
| IBM |
Who
gets the 3G spectrum? (11/01) Government's new plan for 3G
spectrum is a mixed bag for wireless providers. 3G could
provide us with easy access to an incredible range of new
telecommunications services. In order to provide those
services, however, wireless companies must be able to access a
significant amount of spectrum that is currently dominated by
government and other commercial interests. Technology writer
Dana Triplett uncovers the latest plan from the federal
government for assessing spectrum use, offering an inside look
at the players in the struggle for the invisible but valuable
commodity of radio frequency in the U.S. |
| International
Telecommunication Union (ITU) |
The ITU, headquartered in Geneva, Switzerland is an
international organization within which governments and the
private sector coordinate global telecom networks and
services.
ITU Newsroom
Latest press releases and notices.
ITU Calendar of Events
Meeting schedules, events, archives.
ITU
Radio-Frequency Spectrum Publications The
Radiocommunication Sector acts as the coordinator in managing
the usable radio-frequency spectrum efficiently, keeping it
free from harmful interference, and adopts international
regulations and treaties governing this use. |
| NATO |
Cooperation
in Radio Frequency Management (2000) Cooperation between
NATO member countries in the use of radio frequencies for
defence purposes is underpinned by a common commitment to
collective security and defence. The availability of radio
frequencies is essential for the armed forces' operational
readiness and effectiveness and the NATO-wide standardisation
and coordination of frequency allocations is vital to ensure
interoperability among multinational forces. |
| NTIA |
US
National Spectrum Requirements: Projections and Trends The
availability of radio spectrum in the United States is
critical to many telecommunications services, ranging from
cellular telephones to air traffic control. Although spectrum
is not a consumable resource, the use of a frequency at a
given location usually excludes that frequency from being used
by others in the same geographic area. This need for exclusive
geographic use has led to current spectrum regulations that
establish exclusivity in spectrum use by granting licenses for
spectrum use, and the partitioning of the spectrum for shared
use between radio services.
US
Frequency Allocation Chart (PDF)
|
| Radio-Electronics.Com |
Major
Mobile Phone Systems The large number of different mobile
phone systems that are talked about today can be very
confusing. Whilst not all are in use today many different
names and technologies are talked about. The table below gives
a summary of the main systems... |
| RadioRegs |
Articles on the RTTE Directive. |
| RF-man |
Amateur Radio, Citizen's Band, PMR446, Handheld radio,
Buying a new radio, ... |
| RPC Telecommunications |
Specialists in satellite systems and radio transmission,
with a strong emphasis on the engineering, use, management and
regulation of the radio frequency spectrum, especially for
satellite networks. Also develop software tools for use in the
spectrum management process and provide satellite and
telecommunications training. |
| UK Amateur Radio
Astronomy Network |
Radio
Astronomy Frequency Allocations. Frequencies allocated for
radio astronomy in the European Union. |
| ZDNet |
Overcrowded
Airwaves A kind of air traffic control may be needed to
manage our ever-expanding wireless communications. Wireless
networking has been touted as an ideal solution for a wide
range of communications problems -- synchronizing PDAs with
desktop PCs, eliminating printer cables, creating in-building
LANs, connecting buildings on a campus and even spanning the
"last mile" -- the distance between a connected PC
and telephone company or ISP. But wireless has its dark side:
interference. As wireless devices proliferate, we will see
more and more "midair collisions." To understand
why, you need to understand the politics, economics, and
technology behind today's wireless networking equipment. |
|
|
Recent Spectrum Headlines
FreshPatents.com Methods and apparatus for spread spectrum modulation and demodulation
The present invention relates to a method and an apparatus for spread spectrum modulation and demodulation using a special spread spectrum sequence, characterized in that Golay complementary codes are modulated onto orthogonal channels such that a corresponding complex complementary code is obtained. The signal spread by such complex complementary code...
FreshPatents.com Apparatus for transmitting data and additional information simultaneously within a wire-based communication system
An apparatus is provided for transmitting data signals and additional information signals having partially overlapping frequency bands simultaneously within a wire based communication system over the same wired medium using a spread spectrum technique for modulating the additional information signals....
WiMAX News Intel May Take Part in Wimax Spectrum Bid in India!
A couple days ago we reported on the rumors that surfaced saying that Google might bid on the WiMax spectrum in India. Now some are reporting that other major international players besides Google are taking interest in India?s 3G and WiMax auction.
WiMAX News WiMAX 802.16e compliant radio targets 5 GHz spectrum
Extract not available.
FreeNewsFeed Sprint Nextel 3Q Loss Grows on Subscriber Losses
Sprint Nextel Corp., the nation's third-largest wireless carrier, on Thursday reported a wider third-quarter loss and a larger exodus of customers despite an improved slate of phones and cheaper rates.
Sprint, which hasn't reported a quarterly net gain in subscribers in more than two years, continues trying to regain ground in a highly competitive market. Besides investing heavily in improving its customer service efforts, the company has beefed up its portfolio of high-tech smartphones, including Palm In...
BWE Magazine Ultrawideband Internal Planar Broadband Wireless Antennas Offer High Gain and Low Profile for High-Speed, Short-Range Data Communication Equipment
Pulse, a Technitrol Company (NYSE:TNL) introduces its ultra-wide band (UWB) family of high-gain, low-profile, internal planar antennas for high-speed, short-range data communication equipment. These antennas come in sizes that are optimized for applications currently using the UWB spectrum and create opportunities for additional applications on the UWB spectrum. Current applications include laptops, M2M devices, PDAs, smart phones, and high-definition multimedia interfaces (HDMIs) operating on the full 3.1...
BWE Magazine WiMedia Certifies First PHYs for High Band Operation, Paving the Way for Global UWB Adoption
The WiMedia Alliance announced the certification of the first three Ultra Wideband (UWB) physical layer chipsets (PHYs) to support the WiMedia Spectrum Extension Release (SER) announced in August. The chips from Alereon, Realtek and Staccato Communications support operation in Band Groups 1 and 3 (3.1 to 4.8GHz and 6.3 to 7.9GHz, respectively). The Alereon and Staccato chips also support operation in Band Group 6 (7.4 to 9.0GHz).
Network World First public white spaces broadband network is alive in Virginia
The first public white spaces network officially launched on Wednesday in Claudville, Virginia. It is uses sensing technology from Spectrum Bridge with software and Web cams supplied by Microsoft and PCs supplied by Dell. The project was funded the TDF Foundation.
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