<font size=2 face="sans-serif">Wai,</font>
<br><font size=2 face="sans-serif">your position is noted.</font>
<br><font size=2 face="sans-serif">I will open discussion after June 10
waiting for other WG members' comments.</font>
<br>
<br><font size=2 face="sans-serif">Regards, Enrico</font>
<br>
<br>
<br>
<br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">"Fong, Wai H.
(GSFC-5670)" <wai.h.fong@nasa.gov></font>
<br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">"Enrico.Vassallo@esa.int"
<Enrico.Vassallo@esa.int>, "sls-rfm@mailman.ccsds.org"
<sls-rfm@mailman.ccsds.org></font>
<br><font size=1 color=#5f5f5f face="sans-serif">Cc:
</font><font size=1 face="sans-serif">"Marco.Lanucara@esa.int"
<Marco.Lanucara@esa.int>, "Salvador.Marti@esa.int" <Salvador.Marti@esa.int></font>
<br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">19/05/2016 20:22</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">Re: [Sls-rfm]
CCSDS Review of CCSDS 401.0-P-25.1, Radio Frequency and Modulation SystemsPart
1: Earth Stations and Spacecraft</font>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 face="Calibri">Enrico,</font>
<br>
<br><font size=2 face="Calibri">My comments are:</font>
<br><font size=2 face="sans-serif">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>
<br><font size=2 face="sans-serif">2. </font><font size=3>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.</font>
<br><font size=3>The rest I agree with.</font>
<br>
<br><font size=3>Regards,</font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 face="Arial">Wai Fong, Ph.D.</font>
<br><font size=2 face="Arial">Communications Engineer</font>
<br><font size=2 face="Arial">Flight Microwave and Telecommunications Systems
Branch</font>
<br><font size=2 face="Arial">NASA Goddard Space Flight Center</font>
<br><font size=2 face="Arial">Code 567</font>
<br><font size=2 face="Arial">Greenbelt, MD 20771</font>
<p>
<p>
<p>
<br>
<br><font size=2 face="Calibri"><b>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 SystemsPart 1: Earth Stations and Spacecraft </font>
<br>
<br><font size=2 face="sans-serif">Dear All,</font><font size=2 face="Calibri">
<br>
</font><font size=2 face="sans-serif"><br>
this is to inform you of the outcome of the above review.</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
CNES, DLR, INPE and JAXA concurred with the pink sheets.</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
ESA and EUM generated 3 RIDs each. They are attached for your review.</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
My proposal is:</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
1) ESA-MB-01 </font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><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.</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
Disposition: ACCEPTED</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
2) ESA-ML-01 </font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
Makes the recommendation ECSS compatible (specifications cannot be in footnotes).</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
Disposition: ACCEPTED</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
3) ESA-SM-01</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><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)).</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
Disposition: ACCEPTED</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
4) EUM-XE-001</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
Editorial clarification.</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
Disposition: ACCEPTED</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
5) EUM-XE-002</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
Editorial.</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
Disposition: ACCEPTED</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
6) EUM-XE-003</font><font size=2 face="Calibri"> <br>
</font><font size=2 face="sans-serif"><br>
Almost editorial. In the ESA implementation, pilots are used also for lower
order modulations but the suggestion of this RID is reasonable.</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
Disposition: ACCEPTED</font><font size=2 face="Calibri"> <br>
<br>
<br>
</font><font size=2 face="sans-serif"><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.
</font><font size=2 face="Calibri"><br>
</font><font size=2 face="sans-serif"><br>
Regards, Enrico</font><font size=2 face="Calibri"> <br>
<br>
<br>
</font>
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