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Enrico,</div>
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Compromise 1: This is fine.</div>
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<div><font face="Calibri,sans-serif" style="color: rgb(0, 0, 0); font-size: 14px;">Compromise 2:
</font> "that the phase noise of the communication chain should be limited according to the mask given in figure 2.4.23-1 for channel symbol rates equal or above 10 Ms/s <u>for which the lower mask limit shall be 100 Hz; that the same mask should be used for
channel symbol rates below 10 Ms/s by setting the lower validity limit in accordance with the mission channel symbol rate and PLL loop bandwidth.¡±</u></div>
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<p style="margin: 0px; font-size: 14px; ">This means that Figure 2.4.23-1 remains the same? If so, then the compromise is fine.</p>
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<p style="margin: 0px; font-size: 14px; ">Regards,</p>
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<p style="margin: 0px; font-size: 14px; ">Wai Fong, Ph.D.</p>
<p style="margin: 0px; font-size: 14px; ">Communications Engineer</p>
<p style="margin: 0px; font-size: 14px; ">Flight Microwave and Telecommunications Systems Branch</p>
<p style="margin: 0px; font-size: 14px; ">NASA Goddard Space Flight Center</p>
<p style="margin: 0px; font-size: 14px; ">Code 567</p>
<p style="margin: 0px; font-size: 14px; ">Greenbelt, MD 20771</p>
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<span style="font-weight:bold">From: </span>Enrico Vassallo <<a href="mailto:Enrico.Vassallo@esa.int">Enrico.Vassallo@esa.int</a>><br>
<span style="font-weight:bold">Date: </span>Monday, June 27, 2016 at 5:32 AM<br>
<span style="font-weight:bold">To: </span>Victor Sank <<a href="mailto:victor.j.sank@nasa.gov">victor.j.sank@nasa.gov</a>>, Wai Fong <<a href="mailto:wai.h.fong@nasa.gov">wai.h.fong@nasa.gov</a>><br>
<span style="font-weight:bold">Cc: </span>"<a href="mailto:Marco.Lanucara@esa.int">Marco.Lanucara@esa.int</a>" <<a href="mailto:Marco.Lanucara@esa.int">Marco.Lanucara@esa.int</a>>, "<a href="mailto:sls-rfm@mailman.ccsds.org">sls-rfm@mailman.ccsds.org</a>" <<a href="mailto:sls-rfm@mailman.ccsds.org">sls-rfm@mailman.ccsds.org</a>><br>
<span style="font-weight:bold">Subject: </span>RE: [Sls-rfm] Fw: CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation Systems¡©Part 1: Earth Stations and Spacecraft - new proposal<br>
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<div><font size="2" face="sans-serif">Victor and Wai,</font> <br>
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<font size="2" face="sans-serif">are you ready to accept my compromise or to further discuss it? I would like to try and close this review in the next days so that I can send all the needed documentation to the Secretariat by next Friday.</font><br>
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<font size="2" face="sans-serif">Please advise, Enrico</font> <br>
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<font size="1" color="#5f5f5f" face="sans-serif">From: </font><font size="1" face="sans-serif">"Sank, Victor J. (GSFC-567.0)[AS and D, Inc.]" <<a href="mailto:victor.j.sank@nasa.gov">victor.j.sank@nasa.gov</a>></font><br>
<font size="1" color="#5f5f5f" face="sans-serif">To: </font><font size="1" face="sans-serif">"<a href="mailto:Enrico.Vassallo@esa.int">Enrico.Vassallo@esa.int</a>" <<a href="mailto:Enrico.Vassallo@esa.int">Enrico.Vassallo@esa.int</a>>, "Fong, Wai H.
(GSFC-5670)" <<a href="mailto:wai.h.fong@nasa.gov">wai.h.fong@nasa.gov</a>></font><br>
<font size="1" color="#5f5f5f" face="sans-serif">Cc: </font><font size="1" face="sans-serif">"<a href="mailto:sls-rfm@mailman.ccsds.org">sls-rfm@mailman.ccsds.org</a>" <<a href="mailto:sls-rfm@mailman.ccsds.org">sls-rfm@mailman.ccsds.org</a>>, "<a href="mailto:Marco.Lanucara@esa.int">Marco.Lanucara@esa.int</a>"
<<a href="mailto:Marco.Lanucara@esa.int">Marco.Lanucara@esa.int</a>></font><br>
<font size="1" color="#5f5f5f" face="sans-serif">Date: </font><font size="1" face="sans-serif">16/06/2016 14:40</font><br>
<font size="1" color="#5f5f5f" face="sans-serif">Subject: </font><font size="1" face="sans-serif">RE: [Sls-rfm] Fw: CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation Systems¡©Part 1: Earth Stations and Spacecraft - new proposal</font><br>
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<font size="2" color="#004080" face="Calibri">Enrico,</font> <br>
<font size="2" color="#004080" face="Calibri"> I just want to state that I was in agreement with Wai but was negligent in not sending an email. We will discuss your compromise suggestion.</font><br>
<font size="2" color="#004080" face="Calibri">Thanks,</font> <br>
<font size="2" color="#004080" face="Calibri">Victor</font> <br>
<font size="2" color="#004080" face="Calibri"> </font> <br>
<font size="2" face="Calibri"><b>From:</b> Sls-rfm [</font><a href="mailto:sls-rfm-bounces@mailman.ccsds.org"><font size="2" face="Calibri">mailto:sls-rfm-bounces@mailman.ccsds.org</font></a><font size="2" face="Calibri">]
<b>On Behalf Of </b><a href="mailto:Enrico.Vassallo@esa.int">Enrico.Vassallo@esa.int</a><b><br>
Sent:</b> Thursday, June 16, 2016 5:41 AM<b><br>
To:</b> Fong, Wai H. (GSFC-5670) <<a href="mailto:wai.h.fong@nasa.gov">wai.h.fong@nasa.gov</a>><b><br>
Cc:</b> <a href="mailto:sls-rfm@mailman.ccsds.org">sls-rfm@mailman.ccsds.org</a>;
<a href="mailto:Marco.Lanucara@esa.int">Marco.Lanucara@esa.int</a><b><br>
Subject:</b> [Sls-rfm] Fw: CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation Systems¡©Part 1: Earth Stations and Spacecraft - new proposal</font><br>
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<font size="2" face="Arial">Dear Wai,</font><font size="3" face="Times New Roman"><br>
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nobody else submitted any comments to my first proposal so we are down to two RIDs where the two of us have a different view.</font><font size="3" face="Times New Roman"></font><font size="2" face="Arial"><br>
Here's my compromise proposal. Have a look at it and let me know if it could be OK for you.</font><font size="3" face="Times New Roman"><br>
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1) MB-01</font><font size="3" face="Times New Roman"> <br>
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I partly agree and partly disagree with you. </font><font size="3" face="Times New Roman"><br>
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Disagreement:</font><font size="3" face="Times New Roman"> <br>
</font><font size="2" face="Arial"><br>
Also 16-32-64APSK are defined for the first time in this recommendation and not in other parts of 401.
</font><font size="3" face="Times New Roman"><br>
</font><font size="2" face="Arial"><br>
Agreement:</font><font size="3" face="Times New Roman"> <br>
</font><font size="2" face="Arial"><br>
It is true that pi/2-BPSK symbols for the frame headers are only defined and studied so far for the two standards mentioned.
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Compromise:</font><font size="3" face="Times New Roman"> <br>
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New recommends (6):</font><font size="3" face="Times New Roman"> <br>
</font><font size="2" face="Courier New"><br>
¡°</font><font size="2" face="Arial">that the use of a frame header (see A1.5) and of QPSK pilot symbols should be used to improve the acquisition and tracking performance¡±</font><font size="3" face="Times New Roman"></font>
<p><font size="2" face="Arial">The new section A1.5 should be as in the RID but with an initial line saying that the spec is only for systems compliant with
</font><font size="3" face="Calibri">CCSDS 131.2-B-1 and CCSDS 131.2-B-1</font><font size="2" face="Arial"> and that for systems compliant with
</font><font size="3" face="Calibri">CCSDS 131.0-B-2</font><font size="2" face="Arial"> further work is needed.</font><font size="3" face="Times New Roman"><br>
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We then add the task to the charter.</font><font size="3" face="Times New Roman"><br>
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2) SM-01</font><font size="3" face="Times New Roman"> <br>
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Here I also partly agree and partly disagree with you. </font><font size="3" face="Times New Roman"><br>
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Disagreement:</font><font size="3" face="Times New Roman"> <br>
</font><font size="2" face="Arial"><br>
Recommends (7) limits the phase noise mask to channel symbol rates equal to or above 10 Ms/s. Therefore, using the typical 10^-4 for 2BL/Rs one gets 1000 Hz, which is already larger than the 100 Hz proposed by the RID</font><font size="3" face="Times New Roman"><br>
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Agreement:</font><font size="3" face="Times New Roman"> <br>
</font><font size="2" face="Arial"><br>
The recommendation does not prevent somebody from using 64-APSK at 100 ks/s. In that case, one would not know which phase noise mask to use.</font><font size="3" face="Times New Roman"><br>
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Compromise:</font><font size="3" face="Times New Roman"> <br>
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I would do as we did for another issue in the ECSS standard, linking the lower integration limit to the mission specific symbol rate and PLL bandwidth.</font><font size="3" face="Times New Roman"><br>
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Therefore, keeping a factor 10 margin in our pockets, I would propose to re-write recommends (7)
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</font><font size="2" face="Arial"><br>
from</font><font size="3" face="Times New Roman"> </font><br>
<font size="2" face="Times New Roman">(7) that the phase noise of the communication chain should be limited according to the mask given in figure 2.4.23-1 for channel symbol rates equal or above 10 Ms/s;</font><font size="3" face="Times New Roman"><br>
</font><font size="2" face="Arial"><br>
to</font><font size="3" face="Times New Roman"> </font><br>
<font size="2" face="Times New Roman">(7) that the phase noise of the communication chain should be limited according to the mask given in figure 2.4.23-1 for channel symbol rates equal or above 10 Ms/s
<u>for which the lower mask limit shall be 100 Hz; that the same mask should be used for channel symbol rates below 10 Ms/s by setting the lower validity limit in accordance with the mission channel symbol rate and PLL loop bandwidth.</u></font><font size="3" face="Times New Roman"><br>
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</font><font size="2" face="Arial"><br>
Would you be able to accept this compromise? The ESA colleagues originating the RIDs are OK.</font><font size="3" face="Times New Roman"><br>
</font><font size="2" face="Arial"><br>
Regards, Enrico</font><font size="3" face="Times New Roman"> <br>
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----- Forwarded by Enrico Vassallo/esoc/ESA on 16/06/2016 11:17 -----</font><font size="3" face="Times New Roman"><br>
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From: </font><font size="1" face="Arial">Enrico Vassallo/esoc/ESA</font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
To: </font><font size="1" face="Arial">"Fong, Wai H. (GSFC-5670)" <</font><a href="mailto:wai.h.fong@nasa.gov"><font size="1" color="blue" face="Arial"><u>wai.h.fong@nasa.gov</u></font></a><font size="1" face="Arial">></font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
Cc: </font><font size="1" face="Arial">"</font><a href="mailto:Marco.Lanucara@esa.int"><font size="1" color="blue" face="Arial"><u>Marco.Lanucara@esa.int</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:Marco.Lanucara@esa.int"><font size="1" color="blue" face="Arial"><u>Marco.Lanucara@esa.int</u></font></a><font size="1" face="Arial">>,
"</font><a href="mailto:Salvador.Marti@esa.int"><font size="1" color="blue" face="Arial"><u>Salvador.Marti@esa.int</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:Salvador.Marti@esa.int"><font size="1" color="blue" face="Arial"><u>Salvador.Marti@esa.int</u></font></a><font size="1" face="Arial">>,
"</font><a href="mailto:sls-rfm@mailman.ccsds.org"><font size="1" color="blue" face="Arial"><u>sls-rfm@mailman.ccsds.org</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:sls-rfm@mailman.ccsds.org"><font size="1" color="blue" face="Arial"><u>sls-rfm@mailman.ccsds.org</u></font></a><font size="1" face="Arial">></font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
Date: </font><font size="1" face="Arial">20/05/2016 08:48</font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
Subject: </font><font size="1" face="Arial">Re: [Sls-rfm] CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation Systems¡©Part 1: Earth Stations and Spacecraft</font><font size="3" face="Times New Roman"></font></p>
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Wai,</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
your position is noted.</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
I will open discussion after June 10 waiting for other WG members' comments.</font><font size="3" face="Times New Roman"><br>
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Regards, Enrico</font><font size="3" face="Times New Roman"> <br>
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From: </font><font size="1" face="Arial">"Fong, Wai H. (GSFC-5670)" <</font><a href="mailto:wai.h.fong@nasa.gov"><font size="1" color="blue" face="Arial"><u>wai.h.fong@nasa.gov</u></font></a><font size="1" face="Arial">></font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
To: </font><font size="1" face="Arial">"</font><a href="mailto:Enrico.Vassallo@esa.int"><font size="1" color="blue" face="Arial"><u>Enrico.Vassallo@esa.int</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:Enrico.Vassallo@esa.int"><font size="1" color="blue" face="Arial"><u>Enrico.Vassallo@esa.int</u></font></a><font size="1" face="Arial">>,
"</font><a href="mailto:sls-rfm@mailman.ccsds.org"><font size="1" color="blue" face="Arial"><u>sls-rfm@mailman.ccsds.org</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:sls-rfm@mailman.ccsds.org"><font size="1" color="blue" face="Arial"><u>sls-rfm@mailman.ccsds.org</u></font></a><font size="1" face="Arial">></font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
Cc: </font><font size="1" face="Arial">"</font><a href="mailto:Marco.Lanucara@esa.int"><font size="1" color="blue" face="Arial"><u>Marco.Lanucara@esa.int</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:Marco.Lanucara@esa.int"><font size="1" color="blue" face="Arial"><u>Marco.Lanucara@esa.int</u></font></a><font size="1" face="Arial">>,
"</font><a href="mailto:Salvador.Marti@esa.int"><font size="1" color="blue" face="Arial"><u>Salvador.Marti@esa.int</u></font></a><font size="1" face="Arial">" <</font><a href="mailto:Salvador.Marti@esa.int"><font size="1" color="blue" face="Arial"><u>Salvador.Marti@esa.int</u></font></a><font size="1" face="Arial">></font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
Date: </font><font size="1" face="Arial">19/05/2016 20:22</font><font size="3" face="Times New Roman"></font><font size="1" color="#5f5f5f" face="Arial"><br>
Subject: </font><font size="1" face="Arial">Re: [Sls-rfm] CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation Systems¡©Part 1: Earth Stations and Spacecraft</font><font size="3" face="Times New Roman"></font>
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Enrico,</font><font size="3" face="Times New Roman"> <br>
</font><font size="2" face="Calibri"><br>
My comments are:</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
1. </font><font size="3" face="Calibri">ESA-MB-01: The addition of proposed text to specify pi/2-BPSK symbols is inconsistent with the rest of the text that recommends only QPSK, OQPSK, 8PSK, 16APSK, 32APSK, or 64APSK, modulations. In addition, since
pi/2-BPSK only exist in CCSDS 131.2-B-1 and CCSDS 131.2-B-1 and not in 401.0-B, it has not been studied formally as a modulation technique where we would need evaluate the modulation and demodulation complexities. I would reject this RID.</font><font size="3" face="Times New Roman"></font><font size="2" face="Arial"><br>
2. </font><font size="3" face="Times New Roman">ESA-SM-01: The inclusion of 10Hz-100Hz specification of the phase noise mask is necessary because there is no lower bound on symbol rate of the recommendation. Recommends (2) in fact specifies QPSK, OQPSK,
or 8PSK modulations below 10 Ms/s where there could be significant AWGN noise power. Missions trying to operate with very narrow of loop bandwidths to mitigate AWGN noise need to know that they could increase phase noise. I would reject this RID as well.
<br>
The rest I agree with. <br>
<br>
Regards, </font><font size="2" face="Calibri"><br>
</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
Wai Fong, Ph.D.</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
Communications Engineer</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
Flight Microwave and Telecommunications Systems Branch</font><font size="3" face="Times New Roman"></font><font size="2" face="Arial"><br>
NASA Goddard Space Flight Center</font><font size="3" face="Times New Roman"> </font>
<font size="2" face="Arial"><br>
Code 567</font><font size="3" face="Times New Roman"> </font><font size="2" face="Arial"><br>
Greenbelt, MD 20771</font><font size="3" face="Times New Roman"> </font>
<p><font size="3" face="Times New Roman"><br>
</font><font size="2" face="Calibri"><b><br>
From: </b><</font><a href="mailto:sls-rfm-bounces@mailman.ccsds.org"><font size="2" color="blue" face="Calibri"><u>sls-rfm-bounces@mailman.ccsds.org</u></font></a><font size="2" face="Calibri">> on behalf of Enrico Vassallo <</font><a href="mailto:Enrico.Vassallo@esa.int"><font size="2" color="blue" face="Calibri"><u>Enrico.Vassallo@esa.int</u></font></a><font size="2" face="Calibri">><b><br>
Date: </b>Thursday, May 19, 2016 at 9:49 AM<b><br>
To: </b>"</font><a href="mailto:sls-rfm@mailman.ccsds.org"><font size="2" color="blue" face="Calibri"><u>sls-rfm@mailman.ccsds.org</u></font></a><font size="2" face="Calibri">" <</font><a href="mailto:sls-rfm@mailman.ccsds.org"><font size="2" color="blue" face="Calibri"><u>sls-rfm@mailman.ccsds.org</u></font></a><font size="2" face="Calibri">><b><br>
Cc: </b>"</font><a href="mailto:Marco.Lanucara@esa.int"><font size="2" color="blue" face="Calibri"><u>Marco.Lanucara@esa.int</u></font></a><font size="2" face="Calibri">" <</font><a href="mailto:Marco.Lanucara@esa.int"><font size="2" color="blue" face="Calibri"><u>Marco.Lanucara@esa.int</u></font></a><font size="2" face="Calibri">>,
"</font><a href="mailto:Salvador.Marti@esa.int"><font size="2" color="blue" face="Calibri"><u>Salvador.Marti@esa.int</u></font></a><font size="2" face="Calibri">" <</font><a href="mailto:Salvador.Marti@esa.int"><font size="2" color="blue" face="Calibri"><u>Salvador.Marti@esa.int</u></font></a><font size="2" face="Calibri">><b><br>
Subject: </b>[Sls-rfm] CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation Systems¡©Part 1: Earth Stations and Spacecraft
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Dear All,</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
this is to inform you of the outcome of the above review.<br>
<br>
CNES, DLR, INPE and JAXA concurred with the pink sheets.<br>
<br>
ESA and EUM generated 3 RIDs each. They are attached for your review.<br>
<br>
My proposal is:</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
1) ESA-MB-01 <br>
<br>
We were initially thinking of adding Pi/2-BPSK symbols definition as an additional recommendation in 401. However, it makes more sense to have it inside recommendation 2.4.23 that becomes self standing.<br>
<br>
Disposition: ACCEPTED</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
2) ESA-ML-01 <br>
<br>
Makes the recommendation ECSS compatible (specifications cannot be in footnotes).<br>
<br>
Disposition: ACCEPTED</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
3) ESA-SM-01</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
The phase noise between 10 and 100 Hz is not important for this kind of missions with at least 10 Ms/s (even for 1 Ms/s that is behind recommends (2)).<br>
<br>
Disposition: ACCEPTED</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
4) EUM-XE-001</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
Editorial clarification.</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
Disposition: ACCEPTED</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
5) EUM-XE-002</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
Editorial.</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
Disposition: ACCEPTED</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
6) EUM-XE-003</font><font size="2" face="Calibri"> </font><font size="2" face="Arial"><br>
<br>
Almost editorial. In the ESA implementation, pilots are used also for lower order modulations but the suggestion of this RID is reasonable.<br>
<br>
Disposition: ACCEPTED</font><font size="2" face="Calibri"> <br>
<br>
</font><font size="2" face="Arial"><br>
<br>
If I do not hear from you <b><u>by June 10</u></b>, I will assume that the WG concurs with my proposed disposition and will send disposed RIDs and final version of the recommendation to the CCSDS management for approval.
<br>
<br>
Regards, Enrico</font><font size="2" face="Calibri"> <br>
<br>
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