NDLI: Data level fault tolerance in demultiplexer filter banks

Content Provider	IEEE Xplore Digital Library
Author	Redinbo, R.
Copyright Year	1991
Description	Author affiliation: Dept. of Electr. Eng. & Comput. Sci., California Univ., Davis, CA, USA (Redinbo, R.)
Abstract	An efficient method for demultiplexing frequency slotted channels employs multirate filter banks which contain fast Fourier transform processing. All numerical processing is performed at a lower rate commensurate with the small bandwidth of each baseband channel. The paper demonstrates methods for protecting the integrity of the demultiplexing operations by using real number convolutional codes to compute comparable parity values which detect errors at the data sample level. High-rate, systematic convolutional codes produce parity values at a much reduced rate, and protection is achieved by generating parity values in two ways and comparing them. Parity values corresponding to each output channel are generated in parallel by a subsystem, operating even slower and in parallel with the demultiplexer that is virtually identical to the original structure. These parity calculations may be time-shared with the same processing resources because they are so similar.<>
Starting Page	63
Ending Page	68
File Size	423305
Page Count	6
File Format	PDF
ISBN	081862275X
DOI	10.1109/RFTS.1991.212964
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-09-26
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault tolerance Channel bank filters Finite impulse response filter Filter bank Protection Demultiplexing Baseband Bandwidth Frequency division multiplexing Hardware
Content Type	Text
Resource Type	Article

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