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January 23, 2008 ( PowerHomeBiz ) -
Toronto, ON ---
Wireless IP connectivity greater than 50 kilometers is still an elusive creature almost impossible to capture.
Wifi and WiMAX provide the first glimpse of extended communications. However the goal is mobile and fixed wireless IP-connectivity at distances up to 1000km. This year the communications industry prepares for the first prototypes of wireless, software based, open source, multi-slotted connectivity device, with minimum 64Kbs throughput.
(news continued below)
Oftelsat, a leader in the pioneering of Software Defined Radio (SDR), is
working together with other vendors in the United States, building the
Software Designed Radio SDR1000. With SDR, computer hardware can be used as
radio hardware. The SDR uses software digital signal processing, which will
in the future be part of Wifi and wiMAX devices.
Parallel processing makes possible more bandwidth and a higher bitrate.
With advent of DSP processors almost two decades ago computer and
communications technology saw a DSP leveraged to provide sound, fax, video
and telecommunications capabilities wrapped in a simple small package.
Now companies such as Oftelsat are calling for more cooperation from DSP
development leaders. Oftelsat acknowledges that such expertise and knowledge
is not widespread and a lot of work needs to be done. People with experience
in Digital Signal processing (DSP) and/or DSP programming tools (digital
signal generation, filtering and demodulation of complex waveforms) as well
as people with organizational and communication skills are being sought to
enter the arena of this new SDR innovation.
Even though tools for digital signal processing are very expensive and
the companies which focus on DSP development are rare, once the SDR proves
to be workable there's no debate about how such a tool could help in
building connectivity.
Oftelsat is building a device using short-wave (30 Mhz) multi-slotted
radio systems. The radios work with digital signal processing and advanced
serial modulation using soundcards, up to 128 kbs per channel over Near
Vertical Incident Skywave (NVIS) . Wifi is used for space division between
short-wave nodes. The device will be intelligent, meaning that it chooses
the best frequencies and, using load balancing, route via the nodes with the
best propagation. For the node operators this process is automatic and
transparent.
We took up the plan to develop a tactical short-wave radio system for
rural and remote areas, capable delivering 64 Kbsec over distances, more
than 500 km as an addition to Wifi/Wimax possibilities which end at 50 km.
About GAO Embedded Inc.
GAO Embedded Inc., a member of GAO Group, is a leading provider of
embedded development tools that serve the needs of electronic professionals
internationally. For further information, please visit
http://www.GAOEmbedded.com
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