TY - JOUR
T1 - Non-uniform sampling based on an adaptive level-crossing scheme
AU - Malmirchegini, Mehrzad
AU - Kafashan, Mohammad Mehdi
AU - Ghassemian, Mona
AU - Marvasti, Farokh
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2015.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Level-crossing (LC) analog-to-digital (A/D) converters can efficiently sample certain classes of signals. An LC A/D converter is a real-time asynchronous system, which encodes the information of an analog signal into a sequence of nonuniformly spaced time instants. In particular, this class of A/D converters uses an asynchronous data conversion approach, which is a power efficient technique. In this study, the authors propose adaptive and multi-level adaptive LC sampling models as alternatives to conventional LC schemes and apply an iterative algorithm to improve the reconstruction quality of LC A/D converters. This simulation results show that multi-level adaptive LC outperforms conventional A/D converters such as sigma-delta A/D converters in terms of performance and computational complexity.
AB - Level-crossing (LC) analog-to-digital (A/D) converters can efficiently sample certain classes of signals. An LC A/D converter is a real-time asynchronous system, which encodes the information of an analog signal into a sequence of nonuniformly spaced time instants. In particular, this class of A/D converters uses an asynchronous data conversion approach, which is a power efficient technique. In this study, the authors propose adaptive and multi-level adaptive LC sampling models as alternatives to conventional LC schemes and apply an iterative algorithm to improve the reconstruction quality of LC A/D converters. This simulation results show that multi-level adaptive LC outperforms conventional A/D converters such as sigma-delta A/D converters in terms of performance and computational complexity.
UR - http://www.scopus.com/inward/record.url?scp=84939190045&partnerID=8YFLogxK
U2 - 10.1049/iet-spr.2014.0170
DO - 10.1049/iet-spr.2014.0170
M3 - Article
AN - SCOPUS:84939190045
SN - 1751-9675
VL - 9
SP - 484
EP - 490
JO - IET Signal Processing
JF - IET Signal Processing
IS - 6
ER -