<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Good find. It occurs to me that an area of exploration might be around narrow bandwidth aka coherent signals with lower power single rf conversion. </div><div><br></div><div>Then I went to thinking about full duplex satellites and all the complexity around transponders.</div><div><br></div><div>Yes, yes the LTE topic is key and what will drive the research in this area...</div><div><br></div><div><br></div><div>Greg</div><div>Nz8r</div><div><br></div><div><br>On Jun 14, 2014, at 2:40 AM, "Helmut Oeller" <<a href="mailto:dc6ny@gmx.de">dc6ny@gmx.de</a>> wrote:<br><br></div><blockquote type="cite"><div><span>***** High Performance Software Defined Radio Discussion List *****</span><br><span></span><br></div></blockquote><blockquote type="cite"><div>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Arial","sans-serif";
font-weight:bold;
font-style:italic;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.E-MailFormatvorlage17
{mso-style-type:personal-compose;
font-family:"Arial","sans-serif";
color:windowtext;
font-weight:bold;
font-style:italic;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="Section1">
<p class="MsoNormal"><span lang="EN-US" style="font-weight:normal;font-style:normal">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-weight:normal;font-style:normal"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-weight:normal;font-style:normal">an
interesting approach for a Full-Duplex mode using novel analogue and digital
cancellation techniques is described in <a href="http://snsg.stanford.edu/~hsiying/pubs/CommMag2014-5GSIC-2.pdf">http://snsg.stanford.edu/~hsiying/pubs/CommMag2014-5GSIC-2.pdf</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-weight:normal;font-style:normal">A
WIFI test application (80 MHz bandwidth) delivers 110 dB self-interference
cancellation. Smaller bandwidths like LTE(20 MHz) or possible even
‘narrow’ ham applications might simplify the cancellation issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-weight:normal;font-style:normal"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-weight:normal;font-style:normal">73,
Helmut, DC6NY<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-weight:normal;font-style:normal"><o:p> </o:p></span></p>
</div>
</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>HPSDR Discussion List</span><br><span>To post msg: <a href="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</a></span><br><span>Subscription help: <a href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org">http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</a></span><br><span>HPSDR web page: <a href="http://openhpsdr.org">http://openhpsdr.org</a></span><br><span>Archives: <a href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/">http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</a></span></div></blockquote></body></html>