Paper Info
Title
High-speed A/D conversion for ultra-wideband signals based on signal projection over basis functions.
Abstract
The 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.
Year
DOI
Venue
2004
10.1109/ICASSP.2004.1326882
ICASSP (4)
Keywords
Field
DocType
quantization,sampling methods,distortion,band pass filters,frequency domain,frequency domain analysis,ultra wideband,bandwidth,basis functions,time domain
Computer science,Control theory,Ultra-wideband,Basis function,Artificial intelligence,Distortion,Flight dynamics (spacecraft),Frequency domain,Band-pass filter,Pattern recognition,Algorithm,Bandwidth (signal processing),Quantization (signal processing)
Conference
Volume
ISSN
ISBN
4
1520-6149
0-7803-8484-9
Citations 
PageRank 
References 
6
0.76
2
Authors
3
Name
Order
Citations
PageRank
Sebastian Hoyos123429.24
Brian M. Sadler23179286.72
Gonzalo R. Arce31061134.94