Accelerated Performance Evaluation of Fixed-Point Systems With Un-Smooth Operations

Abstract : The problem of accuracy evaluation is one of the most time consuming tasks during the fixed-point refinement process. Analytical techniques based on perturbation theory have been proposed in order to overcome the need for long fixed-point simulation. However, these techniques are not applicable in the presence of certain operations classified as un-smooth operations. In such circumstances, fixed-point simulation should be used. In this paper, an algorithm detailing the hybrid technique which makes use of an analytical accuracy evaluation technique used to accelerate fixed-point simulation is presented. This technique is applicable to signal processing systems with both feed-forward and feedback interconnect topology between its operations. The acceleration obtained as a result of applications of the proposed technique is consistent with fixed-point simulation, while reducing the time taken for fixed-point simulation by several orders of magnitude.
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Submitted on : Monday, December 22, 2014 - 4:57:22 PM
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Karthick Nagaraj Parashar, Daniel Menard, Olivier Sentieys. Accelerated Performance Evaluation of Fixed-Point Systems With Un-Smooth Operations. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, IEEE, 2014, 33 (4), pp.599-612. ⟨10.1109/TCAD.2013.2292510⟩. ⟨hal-01097606⟩

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