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All-digital oversampled front-end sensors

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2 Author(s)
Romdhane, M.S.B. ; Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Madisetti, V.K.

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.

Published in:

Signal Processing Letters, IEEE  (Volume:3 ,  Issue: 2 )