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Domain: vanu.com
Stories and comments across the archive that link to vanu.com.
Stories · 3
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Vanu Replacing Cell Tower Equipment With PCs
Dwight Schwartz writes "As reported in an article on the ScienceDaily site, researchers from Vanu, Inc. of Cambridge, MA, have successfully tested a system, the Vanu Software Radio(tm), that can replace a cellular tower's room full of communications hardware with a Pentium-based computer running Linux. The system offers the hope of making cellular technology more affordable for small, rural communities." The systems have been tested for the last several months in parts of Texas, with wider adoption planned for the near future. -
Linux Powers First Handheld Software Radio
An anonymous reader writes "According to this article at LinuxDevices.com, Vanu Technology is demonstrating what it claims represents the world's first handheld 'software radio' using an iPAQ PDA running Linux at a conference in Washington DC today. Vanu apparently has implemented the signal processing functions on the iPAQ's XScale processor, and their software uses POSIX APIs to make it platform independent. Software radios implement multiple radio standards and frequency bands in software, rather than hardware. A standard iPAQ expansion pack houses the radio transceiver." -
The Illusion of Spectrum Scarcity
Codeine writes "Presentations to the Technical Advisory Council (TAC) of the FCC by Vanu Bose "Software Radio: Enabling Dynamic Spectrum Management" and by David Reed "How wireless networks scale: the illusion of spectrum scarcity." Counterintuitive results from multiuser information theory, network architectures, and physics: Multipath increases capacity, Repeating increases capacity, Motion increases capacity, Repeating reduces energy (safety), Distributed computation increases battery life, Channel sharing decreases latency and jitter. Highly recommended presentation suggesting that the cost of spectrum management by "exclusive property rights" mandated by the State outweighs the advantages we could obtain from a new model that acknowledges physics and the 70 years of receiver development since the regulatory model was adopted at the time of the sinking of the Titanic."