Fault tolerance in onboard processors - Protecting efficient FDM demultiplexersThe application of convolutional codes to protect demultiplexer filter banks is demonstrated analytically for efficient implementations. An overview is given of the parameters for the efficient implementations of filter banks, and real convolutional codes are discussed in terms of DSP operations. Methods for composite filtering and parity generation are outlined, and attention is given to the protection of polyphase filter demultiplexing systems. Real convolutional codes can be applied to protect demultiplexer filter banks by employing two forms of low-rate parity calculation to each filter bank. The parity values are computed either by the output with an FIR parity filter or in parallel with the normal processing by a composite filter. Hardware similarities between the filter bank and the main demultiplexer bank permit efficient redeployment of the processing resources to the main processing function in any configuration.
Document ID
19920047268
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Redinbo, Robert (California, University Davis, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Communications And Radar
Report/Patent Number
AIAA PAPER 92-1969
Meeting Information
Meeting: AIAA International Communication Satellite Systems Conference and Exhibit