Projects

Overview
Project Title	Short (64, 128, 256 bit ) LDPC codes for uplink
Approval	Approved
Document Number	231.1
Charter	5.02 Space Link Coding and Synchronization Working Group
Document Type	Orange
Description of Document	Technical specification of short (64, 128, 256) LDPC codes used for the NGU emergency uplink application profile. See NASA White paper submitted at the Fall 2010 CCSDS meeting in London Oct 2010.
Applicable Patents	There are patent issues in this work area, but appropriate ISO forms have been submitted indicating RAND licensing policy by the patent holder or licensor (explain in comments).
Patent Comments	These are the same patent issues covered for the downlink use of LDPC code Family by NASA.
Survey of Similar Standards Documents or Projects Undertaken in Other Bodies and elsewhere in CCSDS
Resources
Book Editor	NASA
Book Editor Resources	NASA/JPL
Prototype 1	Not Required
Prototype 1 Resources	Not Required
Prototype 2	Not Required
Prototype 2 Resources	Not Required
Prototype 3
Prototype 3 Resources
Contribute	DLR
Monitor Only
Resource Comments

Schedule

Legend for Schedule Milestones = Required for Orange Books = Required for Green Books = Required for Magenta Books = Required for Blue Books Note - Red Books are Draft Blue/Magenta Books Schedule Milestones	Original Completion Date (Date in M/D/YYYY format.)	Estimated Completion Date (Date in M/D/YYYY format.)	Actual Completion Date (Date in M/D/YYYY format.)	Comments (Date in M/D/YYYY format.)
Project Approved	11/30/2011	11/30/2011	12/14/2011	See CMC E-Poll Identifier: CMC-P-2011-11-005
Project Start Date	12/14/2011	12/14/2011	12/14/2011
Internal WG Review
First Draft Circulated to WG	12/15/2011	12/15/2011	4/2/2012	Input to Spring 2012 Meeting
First Draft Comments Due	2/15/2012	6/6/2014	11/11/2014
Second draft circulated to WG	6/15/2012	12/1/2014	12/1/2014
Second Draft Comments Due	9/15/2012	1/15/2015	1/15/2015
Final WB Submitted to AD for Further Processing	11/10/2012	2/6/2015	2/6/2015
External Milestones
Secretariat Document Processing	11/15/2012	3/20/2015	3/20/2015
First Agency Review
RID Resolution
Secretariat Document Processing 2
Final Agency Review
RID Resolution
First Prototype Development
Second Prototype Development
CMC Approval	12/30/2012	6/30/2015	4/10/2015
Total Time to Complete (in months)	12	42