205 lines
7.3 KiB
HTML
205 lines
7.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
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<meta name="generator" content="Pentabarf"/>
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<meta name="DC.date" content="2009-02-26"/>
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<title>Cosin08: Software Radios with GNU Radio</title>
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<link type="text/css" href="../style.css" media="screen,print" rel="Stylesheet"/>
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</head>
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<body>
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<div class="noprint" id="conference-logo">
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<a href="http://cosin.chaostreff.ch">
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<img alt="Chaos Singularity 2008" src="../image/conference/55.128x128.png"/>
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</a>
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</div>
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<div class="noprint" id="menu">
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<ul>
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<li>
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<a href="https://cccv.pentabarf.org/schedule/Cosin08">
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<span class="normal">Index</span>
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</a>
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</li>
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<li>
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<a href="../day/2008-07-04.en.html">
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<span class="normal">Freitag (2008-07-04)</span>
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</a>
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</li>
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<li>
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<a href="../day/2008-07-05.en.html">
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<span class="normal">Samstag (2008-07-05)</span>
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</a>
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</li>
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<li>
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<a href="../day/2008-07-06.en.html">
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<span class="normal">Sonntag (2008-07-06)</span>
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</a>
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</li>
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<li>
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<a href="../speakers.en.html">
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<span class="normal">Speakers</span>
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</a>
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</li>
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<li>
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<a href="../events.en.html">
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<span class="normal">Events</span>
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</a>
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</li>
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<li>
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<ul class="track">
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<li class="track-assorted">
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<a href="../track/Assorted/index.en.html">
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<span class="normal">Assorted</span>
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</a>
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</li>
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<li class="track-politics">
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<a href="../track/Politics/index.en.html">
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<span class="normal">Politics</span>
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</a>
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</li>
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<li class="track-technology">
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<a href="../track/Technology/index.en.html">
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<span class="normal">Technology</span>
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</div>
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<div id="content">
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<p class="release">Cosin08 - 0.42</p>
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<p class="intro">
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<strong>Chaos Singularity 2008</strong>
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<br/>
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<em></em>
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</p>
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<div class="section vevent" id="event">
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<div id="infobox">
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<table>
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<tr>
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<th colspan="2">Speakers</th>
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</tr>
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<tr>
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<td>
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<a href="../speaker/1361.en.html">
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<img width="32" height="32" src="../image/person/0.32x32.png"/>
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</a>
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</td>
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<td>
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<a href="../speaker/1361.en.html">Andreas</a>
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</td>
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</tr>
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</table>
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<table>
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<tr>
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<th colspan="2">Schedule</th>
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</tr>
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<tr>
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<td class="keyword">Day</td>
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<td class="value">Sonntag (2008-07-06)</td>
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</tr>
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<tr>
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<td class="keyword">Room</td>
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<td class="value location">Dachstock</td>
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</tr>
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<tr>
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<td class="keyword">Start time</td>
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<td class="value dtstart" title="2009-02-26T15:00:00+01:00">15:00</td>
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</tr>
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<tr>
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<td class="keyword">Duration</td>
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<td class="value duration" title="P00H45M00S">00:45</td>
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</tr>
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<tr>
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<th colspan="2">Info</th>
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</tr>
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<tr>
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<td class="keyword">ID</td>
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<td class="value" title="2619@Cosin08@pentabarf.org">2619</td>
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</tr>
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<tr>
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<td class="keyword">Event type</td>
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<td class="value">lecture</td>
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</tr>
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<tr>
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<td class="keyword">Track</td>
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<td class="value">Technology</td>
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</tr>
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<tr>
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<td class="keyword">Language used for presentation</td>
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<td class="value">en</td>
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</tr>
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</table>
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</div>
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<h1 class="title summary">Software Radios with GNU Radio</h1>
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<p class="subtitle">How it works and why it's fun.</p>
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<img class="event-image" src="../image/event/2619.128x128.png"/>
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<div class="abstract">
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<p>The idea of software defined radio is to create a radio with building blocks written in a high level programming language, running on a general purpose computer. This means that instead of using hardware components, you can just code up your own blocks, which is cheaper and much more flexible.</p> </div>
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<div class="description">
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<p>A software defined radio is a radio that is built entirely or in large parts in
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software, which runs on a general purpose computer. This means, that instead of
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using analog circuits or a specialized digital signal processor (DSP) to
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process a radio signal, the digitized signal is processed by architecture
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independent high level software running on a general purpose processor (with
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radio, we mean any device, that transmits and/or receives radio waves, not just
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a broadcast receiver). While most modern radios contain firmware that is
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written in some kind of programming language, the important distinction in a
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software radio is that it is not tailored to a specific chip or platform, and
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it is therefore possible to reuse its code across different underlying
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architectures.</p>
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<p>GNU Radio is a free software toolkit for implementing software defined radios.
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It is licensed under the GNU General Public License (GPL), which means that
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anyone is allowed to use, copy and modify it without limits, provided that
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extensions are made available under the same license. The goal of GNU Radio is
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to “bring the code as close to the antenna as possible”, and therefore “turn
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hardware problems into software problems”, according to the projects founder
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Eric Blossom. To this end, GNU Radio provides numerous building blocks for
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signal and information processing, as well as a framework to control the data
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flow between them. By “wiring together” such building blocks, a user can create
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a software defined radio, similar to how one might connect physical RF building
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blocks to create a hardware radio. To allow the use of GNU Radio with live RF
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signals, the Universal Software Radio Peripheral (USRP) can be used. The USRP
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is a hardware front end, that can be tuned to a given frequency and either
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sample the RF spectrum at that frequency, or output a signal according to
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samples coming from a PC.</p>
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<p>This talk will introduce software defined radio, GNU Radio, and the USRP
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(including a live demo) and show, how you can create your own radios, and
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why this is so much fun.</p>
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<p>Depending on the preferences of the audience, this talk will be either in
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German or in English. In any case, it will contain some math (yes, some people
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think that math is fun!) and C++ as well as Python code.</p> </div>
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<div class="links">
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<h2>Links</h2>
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<ul>
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<li>
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<a href="http://gnuradio.org/trac" rel="bookmark">Home of GNU Radio</a>
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</li>
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<li>
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<a href="http://ettus.com" rel="bookmark">Home of the USRP</a>
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</li>
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<li>
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<a href="http://0x7.ch/text/dab-report.pdf" rel="bookmark">My semester thesis about a DAB implementation in GNU Radio</a>
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</li>
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<li>
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<a href="http://0x7.ch/code/gr-dab.tgz" rel="bookmark">My incomplete DAB implementation in GNU Radio</a>
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</li>
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</ul>
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</div>
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<div id="navigation">
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<a href="2593.en.html">
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<span class="previous" title="Skate/ride from Zurich to CoSin"><<<</span>
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</a>
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<a href="2513.en.html">
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<span class="next" title="Suspect Nation">>>></span>
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</a>
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</div>
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</div>
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</div>
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</body>
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</html>
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