A Frequency Method to Study the Propagation of Transient Fault in Combinational Logic

This paper presents a frequency analysis method to analyze the propagation procedure of transient error in combinational logic.By using the Fourier transform with the input signal and the frequency feature of combination circuit,the output can be obtained after frequency-domain computing.A model is proposed in this paper to deal with the signals which drive the combinational logic gates working at nonlinear region.The frequency analysis method is able to provide higher accuracy,while significantly speeding up simulations.Experimental results prove that our approach is several orders of magnitude faster than HSPICE,under the guarantee of approximately 93% accuracy(compared to HSPICE).