Open AccessAnalogue‐to‐information conversion using multi‐comparator‐based integrate‐and‐fire sampler
Author(s) -
Wen Fangqing,
Tao Yu,
Zhang Gong
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.1950
Subject(s) - comparator , nyquist rate , computer science , signal (programming language) , scheme (mathematics) , electronic engineering , successive approximation adc , analog signal , nyquist–shannon sampling theorem , randomness , series (stratigraphy) , voltage , sampling (signal processing) , mathematics , electrical engineering , computer hardware , engineering , digital signal processing , telecommunications , detector , mathematical analysis , paleontology , statistics , biology , programming language
A new methodology for sparse signal acquisition using a multi‐comparator‐based integrate‐and‐fire sampler is presented. By employing the randomness of comparator voltages, the original analogue signal is converted into a series of binaries and is guaranteed to be precisely recovered from these measurements. The proposed scheme operates with a sub‐Nyquist rate, which requires neither a high‐speed linear feedback shift register nor an accurate analogue‐to‐digital converter. The experimental results demonstrate the effectiveness of the proposed scheme.