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<div style="font-family: Calibri, sans-serif; font-size: 20px; ">Tomaso,</div>
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<div style="font-family: Calibri, sans-serif; font-size: 20px; ">Here is an explanation of the complexity column given to me by Ken Andrews, which I will factor into the text in abreviated form:</div>
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<div style="font-family: Calibri, sans-serif; font-size: 20px; "><span class="Apple-style-span" style="font-family: Calibri; font-size: medium; ">The "Memory" column gives the number of kilobits of storage required to decode the listed code. For example, a
BCH decoder in SEC mode requires only a 6-bit shift register, and so its memory is listed as 0.006 kbits. At the other extreme, the (128,64) LDPC code requires about two bytes per graph edge (512 edges x 2 x 8 = 8192 bits) plus some memory per channel symbol,
for a total of about 8.2 kbits. Unfortunately, these complexity metrics depend on details of the implementation, so different decoders will vary somewhat. However, these numbers give a good sense of the complexity landscape, and are useful for comparison.</span></div>
<div style="font-family: Calibri, sans-serif; font-size: 20px; "><span class="Apple-style-span" style="font-family: Calibri; font-size: medium; "><br>
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<div>Regards,</div>
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<div>Greg</div>
<div style="font-family: Calibri, sans-serif; font-size: 20px; "><br>
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<span style="font-weight:bold">From: </span>"<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>" <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<span style="font-weight:bold">Date: </span>Tuesday, September 11, 2012 7:51 AM<br>
<span style="font-weight:bold">To: </span>"Kazz, Greg J (313B)" <<a href="mailto:greg.j.kazz@jpl.nasa.gov">greg.j.kazz@jpl.nasa.gov</a>><br>
<span style="font-weight:bold">Cc: </span>"<a href="mailto:Gianluigi.Liva@dlr.de">Gianluigi.Liva@dlr.de</a>" <<a href="mailto:Gianluigi.Liva@dlr.de">Gianluigi.Liva@dlr.de</a>>, "<a href="mailto:sls-ngu@mailman.ccsds.org">sls-ngu@mailman.ccsds.org</a>" <<a href="mailto:sls-ngu@mailman.ccsds.org">sls-ngu@mailman.ccsds.org</a>><br>
<span style="font-weight:bold">Subject: </span>RE: Update to NGU Greenbook<br>
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<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Greg,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Please find attached the new version with inputs from DLR. Please note that most of contributions concern the coding part; there are also some comments
on part of the text that can be improved in our opinion. In particular Table 5-1 is not editable and some explanation on the column complexity_memory should be given.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Unless other comments are expected, this document version could be used as baseline for the discussion during the meeting in Cleveland<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Best Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Tomaso<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">————————————————————————</span><span lang="DE" style="color:#1F497D"><br>
</span><b><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Deutsches Zentrum für Luft- und Raumfahrt</span></b><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">
(DLR)</span><span lang="DE" style="color:#1F497D"><br>
</span><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">German Aerospace Center</span><span lang="DE" style="color:#1F497D"><br>
</span><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Institute of Communications und Navigation | Satellite Networks | Oberpfaffenhofen | 82234 Wessling | Germany</span><span lang="DE" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Tomaso de Cola, Ph.D.</span></b><span style="color:#1F497D"><br>
</span><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Telefon +49 8153 28-2156 | Telefax +49 8153 28-2844 |</span><span lang="DE" style="font-size: 10pt; color: rgb(31, 73, 125); font-family: Arial, sans-serif; "></span><span style="color:#1F497D"><a href="mailto:sandro.scalise@dlr.de"><span lang="DE" style="font-size: 10pt; font-family: Arial, sans-serif; ">tomaso.decola@dlr.de</span></a></span><span lang="DE" style="color:#1F497D"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a href="http://www.dlr.de/kn/institut/abteilungen/san"><span lang="DE">http://www.dlr.de/kn/institut/abteilungen/san</span></a></span><span style="color:#1F497D"></span><span lang="DE" style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; "> Kazz, Greg J (313B) [<a href="mailto:greg.j.kazz@jpl.nasa.gov">mailto:greg.j.kazz@jpl.nasa.gov</a>]
<br>
<b>Sent:</b> Wednesday, July 25, 2012 8:13 PM<br>
<b>To:</b> Cola, Tomaso de<br>
<b>Cc:</b> Liva, Gianluigi; <a href="mailto:sls-ngu@mailman.ccsds.org">sls-ngu@mailman.ccsds.org</a><br>
<b>Subject:</b> Re: Update to NGU Greenbook<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Tomaso,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">I've transferred the word version now to the same directory that the pdf file is in.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Thanks in advance for your contribution to the NGU Greenbook !<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Easily accessed via this URL below:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><a href="http://tiny.cc/9rk0hw">http://tiny.cc/9rk0hw</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Best regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Greg<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 11pt; color: black; font-family: Calibri, sans-serif; ">From:
</span></b><span style="font-size: 11pt; color: black; font-family: Calibri, sans-serif; ">"<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>" <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<b>Date: </b>Wednesday, July 25, 2012 12:45 AM<br>
<b>To: </b>"Kazz, Greg J (313B)" <<a href="mailto:greg.j.kazz@jpl.nasa.gov">greg.j.kazz@jpl.nasa.gov</a>><br>
<b>Cc: </b>"<a href="mailto:Gianluigi.Liva@dlr.de">Gianluigi.Liva@dlr.de</a>" <<a href="mailto:Gianluigi.Liva@dlr.de">Gianluigi.Liva@dlr.de</a>>, "<a href="mailto:sls-ngu@mailman.ccsds.org">sls-ngu@mailman.ccsds.org</a>" <<a href="mailto:sls-ngu@mailman.ccsds.org">sls-ngu@mailman.ccsds.org</a>><br>
<b>Subject: </b>RE: Update to NGU Greenbook<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Greg,</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Could you please also upload a word version of the document so that we can update it with details about the codes we presented in the last two CCSDS
meetings, as recently agreed?</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Thanks in advance</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Tomaso</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">————————————————————————</span><span lang="DE" style="color:#1F497D"><br>
</span><b><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Deutsches Zentrum für Luft- und Raumfahrt</span></b><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">
(DLR)</span><span lang="DE" style="color:#1F497D"><br>
</span><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">German Aerospace Center</span><span lang="DE" style="color:#1F497D"><br>
</span><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Institute of Communications und Navigation | Satellite Networks | Oberpfaffenhofen | 82234 Wessling | Germany</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Tomaso de Cola, Ph.D.</span></b><span style="color:#1F497D"><br>
</span><span lang="DE" style="font-size: 10pt; color: rgb(105, 105, 105); font-family: Arial, sans-serif; ">Telefon +49 8153 28-2156 | Telefax +49 8153 28-2844 |</span><span style="color:#1F497D"><a href="mailto:sandro.scalise@dlr.de"><span lang="DE" style="font-size: 10pt; font-family: Arial, sans-serif; ">tomaso.decola@dlr.de</span></a></span><span lang="DE" style="color:#1F497D"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a href="http://www.dlr.de/kn/institut/abteilungen/san"><span lang="DE">http://www.dlr.de/kn/institut/abteilungen/san</span></a></span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; color: black; font-family: Tahoma, sans-serif; ">From:</span></b><span style="font-size: 10pt; color: black; font-family: Tahoma, sans-serif; "><a href="mailto:sls-ngu-bounces@mailman.ccsds.org">sls-ngu-bounces@mailman.ccsds.org</a>
[<a href="mailto:sls-ngu-bounces@mailman.ccsds.org">mailto:sls-ngu-bounces@mailman.ccsds.org</a>]
<b>On Behalf Of </b>Kazz, Greg J (313B)<br>
<b>Sent:</b> Tuesday, July 03, 2012 1:35 AM<br>
<b>To:</b> <a href="mailto:sls-ngu@mailman.ccsds.org">sls-ngu@mailman.ccsds.org</a>;
<a href="mailto:Massimo.Bertinelli@esa.int">Massimo.Bertinelli@esa.int</a><br>
<b>Subject:</b> [Sls-ngu] Update to NGU Greenbook</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">NGU WG members,</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Please find the latest update to the NGU WG Green book dated July 5 (in advance of the US 4th of July holiday) on the CWE under the URL:</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "><a href="http://tiny.cc/13dugw">http://tiny.cc/13dugw</a></span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">The purpose of this update is to address the ESA concerns documented in the viewgraph package (also loaded – same URL above) which we did not have time to discuss
during the meeting in Darmstadt. I believe I was able to resolve most of the ESA issues by making changes to the green book. Changes are shown in red using the Word revision feature so that they are easily found. </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Issues that did not require rewording but rather clarification outside of the document are:</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Chapter 4 – FECF presence not required for LDPC codes.</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Chapter 4.2 – ARQ sent via telemetry. It is envisioned that LTP will provide another alternative (selective repeat) along with COP-1 (go-back-N) for TC.</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Table 5.1 – How is convolutional code evaluated wrt CWER – I asked the coding group to comment on this one – waiting on response now.</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Your comments are as always welcome.</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Best regards,</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; "> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Greg Kazz</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 15pt; color: black; font-family: Calibri, sans-serif; ">Chairman SLS-NGU WG </span><span style="color:black"><o:p></o:p></span></p>
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