Dear SLS-CC Members and Friends,

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Dear SLS-CC Members and Friends,
here's the updated agenda with the list input papers (i.e. agenda items) added to the goals
for the SLS-CC Groups Meetings to be held in April in Athens. For references please consult the
MoMs of Fall 2004 Meetings. The Input Papers are available in the Channel Coding Working Group DocuShare Area.
--------------Tuesday April 12 am SLS-TCC WG [Telecommand Channel Coding WG]
Presentation of Revised Draft Telecommand Channel Coding Book (Green Book)
Gathering of comments on the book aiming at agreed improvement for producing version to be
submitted to Agency Review.
Discussion Lead:
ESA/deLL
Input Papers:
o Minutes of Fall 2004 Meeting for review of Action Items, etc.
o TC Channel Coding Green Book (Draft 2).
--------------Tuesday April 12 pm SLS-LEC BOF [Long Erasure Codes (aka Tornado Codes) BOF]
- Definition application scenarios for LEC taken from existing and planned/future missions
- Report statistical analysis on erasures derived from existing channels and define Channel
Reference Characteristics
- Report on preliminary investigations on possible solutions towards LEC (LDPCC vs. Reed-Solomon
vs. tornado vs. ...)
- Define structure and responsibilities for the BOF report.
Discussion Lead:
ESA/UniBO and NASA/JPL
Input Papers:
o Minutes of Fall 2004 Meeting for review of Action Items, etc.
o Design of Long Erasure Codes for Realistic Environments (M. Chiani and E. Paolini, University
of Bologna);
o RS Codes as Packet- Erasure Codes (Yang Han and William E. Ryan, The University of
Arizona)
o Long Erasure Correcting Codes (Dariush Divsalar, NASA/JPL)
o Comparing RS codes with Tornado, LT, and Raptor codes (NASA/JPL)
o Outages At the DSN (NASA/JPL)
--------------Wednesday April 13 am
SLS-C&S WG [Coding & Synchronization WG]
- Verify Status of the Draft CCSDS Orange Book on the experimental experience of LDPC encoder
chip design
Discussion Lead:
NASA/GSFC
- Verify status for publication of Telemetry Channel Coding Green Book
Discussion Lead:
SLS-CC Chair (possibly with CCSDS Secretariat and NASA/JPL)
Input Papers:
o Minutes of Fall 2004 Meeting for review of Action Items, etc.
o Low Density Parity Check Code for Rate 7/8 – Draft Orange Book updated to April 2005
(Wai Fong, NASA/GSFC)
---------------
Wednesday April 13 pm
Joint Meeting with RFM WG
The main topic of this Meeting will be the reporting of the action assigned within the RFM WG
requesting independent evaluation of ESA's results by other Agencies.
Input Papers:
o Minutes of Previous Meetings for review of Action Items, etc.
o UPDATE ON THE ESA MHOMS (SCCC SCHEME) MODEM DEVELOPMENT STATUS
(Alberto Gines, ESA/ESTEC)
--------------Thursday April 14
SLS-New Codes BOF [Requirements Document]
- Discussion and Finalization of the Requirements and Evaluation Criteria Document (RECD)
Discussion Lead:
UniBO
Input Papers:
o Minutes of Fall 2004 Meeting for review of Action Items, etc.
o RECD updated to April 2005 (University Of Bologna Editor)
o Development of a Unified NASA Position on the Proposed Standard for Low-Density ParityCheck (LDPC) Codes
o CNES comments on the REQUIREMENTS EVALUATION AND CRITERIA DOCUMENT
issue 3.2 (Guy Lesthievent)
- Reporting on current investigations on new codes
Discussion Lead:
Reporting Agencies
Input Papers:
o Low Density Parity Check Code Family (NASA/JPL)
o LDPC Performance vs. Number of Iterations [JPL, K. Andrews, C. Jones, S. Dolinar, F.
Pollara]
o UPDATE ON THE ESA MHOMS (SCCC SCHEME) MODEM DEVELOPMENT STATUS
(Alberto Ginesi, ESA/ESTEC)
--------------Note that Friday April 15 is dedicated to the SLS plenary while Monday April 11 is for CCSDS/OMG
activities and for the SLS-Security WG Meeting.
Best Regards,
Gian Paolo Calzolari
SLS-CC Chair
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