Title :
All-digital oversampled front-end sensors
Author :
Romdhane, M.S.B. ; Madisetti, V.K.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
All digital signal processing (DSP) circuits use analog front-end anti-aliasing filters to process sensor inputs. These analog filters have a number of disadvantages with respect to cost, power, stability, and ease of integration in VLSI. This paper proposes the use of all-digital oversampling front-end sensors (based on adaptive filters), resulting in a performance/cost-effective DSP application. Simulations for modem and speech applications illustrate the design tradeoffs.
Keywords :
adaptive filters; digital filters; filtering theory; modems; signal sampling; speech processing; DSP application; adaptive filters; all digital signal processing circuits; all-digital oversampled front-end sensors; analog front-end anti-aliasing filters; modem; sensor inputs processing; simulations; speech applications; Circuit stability; Costs; Delay; Digital filters; Digital signal processing; Laser tuning; Least squares approximation; Modems; Narrowband; Very large scale integration;
Journal_Title :
Signal Processing Letters, IEEE
