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Shorts Nvy DSP and Software Defined Radio (sdr) Oftelsat, a leader in the pioneering of Software Defined Radio (SDR), is working together with other vendors in the United States, building the Softwar...
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DSP and Software Defined Radio (sdr)
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.
GAO Group is headquartered in Toronto, Canada. GAO Group has marketing, sales, customer support, manufacturing and R & D facilities in various countries, with most of its staff located in Canada, USA, Europe and China.
The first Member Company, GAO Research Inc., was founded on June 2, 1992 and it quickly established its reputation as an R & D power house in the embedded industry. GAO Group has continually grown and has become a conglomerate of fast growing companies with an enormous international customer base and an extensive network of VARs, distributors, resellers, and strategic partners in diversified industries worldwide.
With the aim of providing unparalleled services to its enormous customer base spread out over the world, GAO Group has developed and deployed state of the art technologies among all its facilities to support such functions as e-commerce, inventory management, CRM, project management, and supply chain management.
About the Author
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