[Sls-slp] [Sls-cc] Re: Maximum Frame size for Turbocodes?

[Gian.Paolo.Calzolari at esa.int]

Dear Greg,
        there are some "historical" reasons for that TBD that would take 
long to write.

On the same topic I have subimmeted  a RID ESA-GPC-27 (see below for the 
CWE location)

Therefore the matyter is under WG discussion and I take the occasion to 
silicite WG Memebrs to provide their position with respect to the above 
mentione  RID ESA-GPC-27.

Gian Paolo Calzolari
SLS-C&S WG Chair

See the area 
The CCSDS Collaborative Work Environment (CWE) > Space Link Services Area 
(SLS) > Documents > SLS-CandS > Meeting Materials > 2010 > 
201001.WinterMaterial  

at URL 
http://cwe.ccsds.org/sls/docs/Forms/AllItems.aspx?RootFolder=%2fsls%2fdocs%2fSLS-CandS%2fMeeting%20Materials%2f2010%2f201001.WinterMaterial&FolderCTID=&View={16ACDA38-FFA3-4657-8F27-B166C23C24A2}

____________________________________________
 
Gian Paolo Calzolari 
Systems Engineer, OPS-OT

European Space Agency ESA/ESOC
Robert Bosch Str. 5
D-64293-Darmstadt
Tel +49-6151-902913 fax +49-6151-902962
http://www.esa.int/esoc    Email: Gian.Paolo.Calzolari[at]esa.int 
[replace [at] with @ for the correct e-mail address]
____________________________________________





"Kazz, Greg J (313B)" <greg.j.kazz at jpl.nasa.gov> 
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11-02-2010 19:25

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Subject
[Sls-cc] Maximum Frame size for Turbocodes?






Dear CCSDS Coding & Sync WG,
 
I just want to confirm that the maximum allowable transfer frame size is 
1115 octets when one uses a Turbo code. 
 
A NASA mission in pre-phase A has approached me to ask if CCSDS has 
completed any further studies per the comment in the current standard 
below to  allow missions to use the 2048 octet frame size.  Have any 
further studies  been carried out or are planned by CCSDS ?
 
Currently Section 8 of the TM Sync and Channel Coding  (CCSDS 131.0-B-1 ) 
states:
 
 
8.6.2 Performance for only the following information block lengths (i.e., 
Transfer Frame lengths) has been validated by CCSDS and approved for use 
(values are in octets): 
a) 223; 
b) 446; 
c) 892; 
d) 1115; 
e) 2048. 
NOTE ? Interleaver parameters for the length 2048 octets are under study 
by the CCSDS. Until finalized, use of this option is not recommended.
 
 
Looking over the pink sheets (ccsds 131.0-P-1.1) I did not see any new 
information on this section.
 
Thanks and best regards,
 
Greg_______________________________________________
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