Analytical Optimization of Bit-Widths in Fixed-Point LTI Systems
Analytical Optimization of Bit-Widths in Fixed-Point LTI Systems
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DOI：
10.1109/tcad.2011.2170988
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发表时间：
2012-03-01
影响因子：
2.9
通讯作者：
Zilic, Zeljko
中科院分区：
文献类型：
--
作者：
Sarbishei, Omid;Radecka, Katarzyna;Zilic, Zeljko
范围和精度分析对于定点电路的高级综合和验证具有重要意义。传统的范围和精度分析方法主要集中在组合算术电路，并遭受重大的效率低下时，处理时序线性时不变电路。这些问题主要包括当考虑常系数量化时无法分析精度，以及缺乏有效的字长优化算法来处理变量和常数，同时满足误差度量。本文提出的算法解决了这些问题。实验结果表明了算法的有效性和鲁棒性。
Analyses of range and precision are important for high-level synthesis and verification of fixed-point circuits. Conventional range and precision analysis methods mostly focus on combinational arithmetic circuits and suffer from major inefficiencies when dealing with sequential linear-time-invariant circuits. Such problems mainly include inability to analyze precision when quantization of constant coefficients is taken into account, and lacking efficient word-length optimization algorithms to handle both variables and constants, while satisfying the error metrics. The algorithms presented in this paper solve these problems. Experiments illustrate the efficiency and robustness of our algorithms.