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Analytical estimation of transition activity for DSP architectures

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3 Author(s)
Ramprasad, S. ; Dept. of Comput. Sci., Illinois Univ., Urbana, IL, USA ; Shanbhag, N.R. ; Hajj, I.N.

We present an analytical method to estimate the average number of transitions, T, for a given DSP architecture. First, an exact relation between the transition activity, probability, and autocorrelation for a 1-bit signal is derived. Next, we estimate word-level signal transition activity using word-level signal statistics, the signal generation model, and the signal encoding. Input signal statistics are propagated through the DSP operators in a system and then employed to estimate T. Simulations with filters result in errors in T between 1% and 12%. Also, the transpose form is shown to have fewer signal transitions than the direct form for the same input

Published in:

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on  (Volume:3 )

Date of Conference:

9-12 Jun 1997

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