一种用于物联网应用的新型混合信号闪存有限脉冲响应 (FFIR) 滤波器.pdf

1、A Novel Mixed-Signal Flash-based Finite Impulse Response(FFIR)Filter for IoT ApplicationsCheng-Yen LeeSunil P.KhatriAli Ghrayeb+Texas A&M University,College Station,USA+Texas A&M University at Qatar,Doha,Qatar1Outline Introduction Prior Works and Motivation Background:Flash Transistor Proposed Struc

2、ture Flash-based Finite Impulse Response(FFIR)Filter Flash-based Coefficient Multiplier(FCM)Experimental Results Simulation Environment Setup Performance of FCM Performance of FFIR Comparison Conclusions2Introduction Low-power Internet of Things(IoT)devices have recently gainedsignificant attention.

3、These IoT devices collect and process information with extremely limited computing resources.For IoT devices implementing Digital Signal Processing(DSP)applications,the power budget for the filtering operation can be significant.Achieving optimal performance while minimizing power consumption,energy

4、 usage,and chip area becomes a key design requirement.Among the different types of filters in DSP applications,the Finite Impulse Response(FIR)filter is widely used,due to its simplicity,stability,and linear phase response.3Introduction:Digital FIR Filter A direct-form N-tap Digital FIR(DFIR)filter

5、comprises A delay line:Stores input signal samples.N coefficient multipliers:Multiply samples with filter coefficients(C0-N-1).N-1 summation circuits:Sum multiplier results to produce the final output.To achieve rigorous filter specifications,such as narrow transition band and high stopband attenuat

6、ion,DFIR filters require a large number of taps.The use of DFIR filters with a large number of taps becomes impractical for IoT devices.Increases power consumption4Prior Works and Motivation Several prior works have focused on the development of Analog FIR(AFIR)filters,leveraging analog computation