High-Speed A/D Conversion for Ultra-Wideband Signals Based on Signal Projection over Basis Functions Conference Paper

abstract

• This paper introduces techniques to perform analog to digital (A/D) conversion, based on the quantization of the coefficients obtained by the projection of a continuous-time signal over an orthogonal space. This framework for A/D conversion is motivated by the sampling of an input signal in domains which may lead to lower levels of signal distortion and significantly less demanding A/D conversion characteristics. The A/D conversion distortion is reduced by assigning optimal bit rates according to the variance distribution of the coefficients. Moreover, since the quantization of the coefficients is realized at the end of a time window during which the signal is projected, the speed of the quantizers can be much lower than the one needed in conventional time-domain ADCs. In particular, we study ADC in the frequency domain which overcomes some of the difficulties encountered with conventional time-domain A/D conversion of signals with very large bandwidths, such as ultra-wideband (UWB) signals.

name of conference

• 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing

authors

• Hoyos, Sebastian

published proceedings

• 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing

author list (cited authors)

• Hoyos, S., Sadler, B. M., & Arce, G. R.

citation count

• 12

complete list of authors

• Hoyos, Sebastian||Sadler, Brian M||Arce, Gonzalo R

publication date

• September 2004

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• Proceedings of the ... IEEE International Conference on Acoustics, Speech, and Signal Processing / sponsored by the Institute of Electrical and Electronics Engineers Signal Processing Society. ICASSP (Conference)  Journal

Digital Object Identifier (DOI)

• 10.1109/icassp.2004.1326882

start page

• iv-537-iv-540

volume

• 4