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DVB-S2 Experiment over NASA's Space NetworkThe commercial DVB-S2 standard was successfully demonstrated over NASAs Space Network (SN) and the Tracking Data and Relay Satellite System (TDRSS) during testing conducted September 20-22nd, 2016. This test was a joint effort between NASA Glenn Research Center (GRC) and Goddard Space Flight Center (GSFC) to evaluate the performance of DVB-S2 as an alternative to traditional NASA SN waveforms. Two distinct sets of tests were conducted: one was sourced from the Space Communication and Navigation (SCaN) Testbed, an external payload on the International Space Station, and the other was sourced from GRCs S-band ground station to emulate a Space Network user through TDRSS. In both cases, a commercial off-the-shelf (COTS) receiver made by Newtec was used to receive the signal at White Sands Complex. Using SCaN Testbed, peak data rates of 5.7 Mbps were demonstrated. Peak data rates of 33 Mbps were demonstrated over the GRC S-band ground station through a 10MHz channel over TDRSS, using 32-amplitude phase shift keying (APSK) and a rate 89 low density parity check (LDPC) code. Advanced features of the DVB-S2 standard were evaluated, including variable and adaptive coding and modulation (VCMACM), as well as an adaptive digital pre-distortion (DPD) algorithm. These features provided additional data throughput and increased link performance reliability. This testing has shown that commercial standards are a viable, low-cost alternative for future Space Network users.
Document ID
20170006587
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Downey, Joseph A.
(NASA Glenn Research Center Cleveland, OH United States)
Evans, Michael A.
(NASA Glenn Research Center Cleveland, OH United States)
Tollis, Nicholas S.
(Vantage Partners, LLC Cleveland, OH, United States)
Date Acquired
July 17, 2017
Publication Date
July 1, 2017
Subject Category
Communications And Radar
Report/Patent Number
E-19384
GRC-E-DAA-TN42962
NASA/TM-2017-219524
Funding Number(s)
CONTRACT_GRANT: NNC12BA01B
WBS: WBS 553323.04.10.09.01.01
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
waveforms
transmitters receivers
space communications
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