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Bandwidth Efficient Baseband Multi-ModulatorThe High Rate Baseband Multi-Modulator (HRBM) ASIC is being developed to provide High-speed Bandwidth Efficient Modulations to NASA missions. Bandwidth efficiencies from 2.0 bits/symbol/Hz to 2.75 bits/symbl/Hz are selectable from three CCSDS modulations: Gaussian Minimum Shift Keying (GMSK), Filter Offset Quadrature Phase Shift Keying (Filtered- OQSK) and 8-Phase Shift Keying Trellis Coded Modulation (8-PSK TCM). An FPGA version of the HRBM is developed first to verify the individual modulation designs and characterize timing and performance issues involved with digital baseband modulation synthesis. A Finite Input Response (FIR) filter is included to provided baseband pulse shaping to reduce out-of-band spectral emissions. This is filter is programmable and can be tailored to meet system requirements. The ASIC is targeted to provide up to 600 Mbps throughput and will provide serial as well as parallel input. This paper provides an overview of the technology development and current status.
Document ID
20030105591
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Fong, Wai
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gray, Andrew
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yeh, Pen-Shu
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Spacecraft Instrumentation And Astrionics
Meeting Information
Meeting: ESTC 2003
Location: College Park, MD
Country: United States
Start Date: June 24, 2003
End Date: June 26, 2003
Sponsors: European Space Agency. Ulysses Office
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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