Projects

Overview
Project Title	Simultaneous transmission of High-order modulations and PN ranging for high-rate space-to-Earth
Approval	Draft
Document Number	to be assigned
Charter	5.01 RF and Modulation Working Group
Document Type	Orange
Description of Document	The objective of this experimental specification is to define a methodology for coupling the PN ranging with filtered high-order modulations, for allowing simultaneous demodulation of a high-rate telemetry stream while tracking the PN ranging sequence. The experimental specification will complement the followings CCSDS books: 401.0-B, that regulates the usage of GMSK with PN ranging 413.1-G, that, for the above, provides example of receivers and performance results With the same analogy, the experimental standard will provide the followings: Experimental normative specifications, for implementing a HoM with PN ranging system An informative report, that provides examples of receivers, prototypes that were done, and performance results
Applicable Patents	There are no patent issues for this technology that are known by the CCSDS community
Patent Comments	N/A
Survey of Similar Standards Documents or Projects Undertaken in Other Bodies and elsewhere in CCSDS	The WG is not aware of any similar activity. Review of literature was done by ESA under two internal studies done from 2020 till 2024, and published on IEEE Journals, thus confirming the novelty of the technique.
Resources
Book Editor	ESA
Book Editor Resources	8 mm
Prototype 1	ESA
Prototype 1 Resources	0 mm, since already implemented by ESA (although not required)
Prototype 2
Prototype 2 Resources
Prototype 3
Prototype 3 Resources
Contribute
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.)	Comments (Date in M/D/YYYY format.)
Project Approved
Project Start Date
Internal WG Review
First Draft Circulated to WG		Fall 2025 meeting
First Draft Comments Due
Second draft circulated to WG
Second Draft Comments Due
Final WB Submitted to AD for Further Processing
External Milestones
Secretariat Document Processing
First Agency Review
RID Resolution
Secretariat Document Processing 2
Final Agency Review
RID Resolution
First Prototype Development
Second Prototype Development
CMC Approval
Total Time to Complete (in months)	0