FPGA Tutorial: Free 'Insider's Guide' (2009 Edition)
Altera? Xilinx? FPGA boards or design tools as from Altium or Mentor Graphics? What do users and newbies think about new FPGA technologies? Find out in our free tutorial on FPGAs, tools, and boards.

Telelogic Modeling Community: Whitepapers - UML, C/C++, OO Programming

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GNU Software Defined Radio
GNU Radio is a collection of software that when combined with minimal hardware, allows the construction of radios where the actual waveforms transmitted and received are defined by software. What this means is that it turns the digital modulation schemes used in today's high performance wireless devices into software problems.
preview: http://www.gnu.org  

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Open SDR Project
What are we doing? We're creating an open source Software Defined Radio. To be more specific, we're designing the software and hardware to enable experimentation with the latest digital wireless protocols. What is a Software Defined Radio? Joe Mitoloa says, 'A software radio is a radio whose channel modulation waveforms are defined in software. That is, waveforms are generated as sampled digital signals, converted from digital to...
preview: http://opensdr.sourceforge.net  

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OSSIE development site for software-defined radio
OSSIE is an open source Software Defined Radio (SDR) development effort based at Virginia Tech. OSSIE is primarily intended to enable research and education in SDR and wireless communications. The software package includes an SDR core framework based on the JTRS Software Communications Architecture (SCA), tools for rapid development of SDR components and waveforms (applications), and an evolving library of pre-built components and waveforms....
preview: http://ossie.wireless.vt.edu  

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Software Radio Project
This is a project to create a software radio device that uses USB-2.0 to deliver raw data. Why software radio ? Software radio has many advantages: CPU can perform a Fourier transform on the captured data and display all active stations instead of having to seek from one to another.
preview: http://volodya-project.sourceforge.net  

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Software Radio Security
To date there are no accepted standards governing what constitutes acceptable software radio security. This project aims to investigate and propose security features for software radios, specifically focusing on prevention and detection of unauthorized or faulty software execution.
preview: http://srg.cs.uiuc.edu