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Realizing a flexible constraint length Viterbi decoder for software radio on a de Bruijn interconnection network

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5 Author(s)
Garga, G. ; Indian Inst. of Sci., Bangalore ; Alle, M. ; Varadarajan, K. ; Nandy, S.K.
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Building flexible constraint length Viterbi decoders requires us to be able to realize de Bruijn networks of various sizes on the physically provided interconnection network. This paper considers the case when the physical network is itself a de Bruijn network and presents a scalable technique for realizing any n-node de Bruijn network on an N-node de Bruijn network, where n < N. The technique ensures that the length of the longest path realized on the network is minimized and that each physical connection is utilized to send only one data item, both of which are desirable in order to reduce the hardware complexity of the network and to obtain the best possible performance.

Published in:

System-on-Chip, 2008. SOC 2008. International Symposium on

Date of Conference:

5-6 Nov. 2008