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On retiming of multirate DSP algorithms

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2 Author(s)
Zivojnovic, V. ; Integrated Syst. for Signal Proc., Tech. Hochschule Aachen, Germany ; Schoenen, R.

The retiming of DSP algorithms exhibiting multirate behavior is treated. Using the non-ordinary marked graph model and the reachability theory, we provide a new condition for valid retiming of multirate graphs. We show that for a graph with n nodes the reachability condition can be split into the reachability condition for the topologically-equivalent unit-rate graph (all rates set to one), and (n 2-n)/2 rate-dependent conditions. Using this property a class of equivalent graphs of reduced complexity is introduced which are equivalent in terms of retiming. Additionally, the circuit-based necessary condition for valid retiming of multirate graphs is extended for the sufficient part

Published in:

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on  (Volume:6 )

Date of Conference:

7-10 May 1996