International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / With every new spacecraft that is designed comes a greater density of information that will
be stored once it is in operation. This, coupled with the desire to reduce the number of
ground stations needed to download this information from the spacecraft, places new
requirements on telemetry transmitters. These new transmitters must be capable of data
rates of 320 Mbps and beyond.
Although the necessary bandwidth is available for some non-bandwidth-limited
transmissions in Ka-Band and above, many systems will continue to rely on more narrow
allocations down to X-Band. These systems will require filtering of the modulation to meet
spectral limits. The usual requirements of this filtering also include that it not introduce
high levels of inter-symbol interference (ISI) to the transmission.
These constraints have been addressed at CE by implementing a DSP technique that pre-filters
a QPSK symbol set to achieve bandwidth-limited 320 Mbps operation. This
implementation operates within the speed range of the radiation-hardened digital
technologies that are currently available and consumes less power than the traditional high-speed
FIR techniques.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/607635 |
| Date | 10 1900 |
| Creators | Anderson, Christopher |
| Contributors | Cincinnati Electronics |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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