NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Deep-Space Ka-Band Link Priority Data Protection: Pre-Emptive Retransmission vs. MarginIn this paper the performance of two preemptive retransmission schemes for protection of priority data over deep-space Ka-band links is evaluated. The first scheme merges the correctly received bit from each transmission to create the most complete set of priority data for each pass (bit merge). The second scheme (symbol combining) combines the soft symbols received from each transmission of the priority data to increase the priority data's signal to noise ratio (SNR), thus increasing the liklihood of the correct reception.
Document ID
20150008654
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
hdl:2014/44871
Authors
Shambayati, Shervin (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 20, 2015
Publication Date
March 7, 2009
Subject Category
Communications And Radar
Meeting Information
Meeting: 2009 IEEE Aerospace Conference
Location: Big Sky, MT
Country: United States
Start Date: March 7, 2009
End Date: March 14, 2009
Sponsors: American Inst. of Aeronautics and Astronautics, Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.

Related Records

There are no records associated with this record.
No Preview Available