Title :
Improving ADC resolution through the least square estimation
Author :
Hu, Chao ; Tian, Longqiang ; Chen, Dongmei ; Meng, Max Q -H
Author_Institution :
Shenzhen Inst. of Adv. Integration Technol., Chinese Acad. of Sci./The Chinese Univ. of Hong Kong, Shenzhen
Abstract :
This paper proposes a method to improve the resolution of analog to digital (AD) conversion, which is based on the least square estimate method on the AD sampling data. Our method is realized by the software processing, and it provides a way to obtain higher resolution data of the sampling signals with the fixed hardware cost. It is suitable for processing the signal with some types of noises with stable statistical characteristics, and the signal should be of slower variation comparing with the sampling rate. This method has been applied on the measurement system of the magnetic localization system for the robotic wireless capsule, and the results show it feasible for it to be realized to the improvement resolution of the measurement system.
Keywords :
analogue-digital conversion; circuit noise; electronic engineering computing; least squares approximations; statistical analysis; ADC resolution; analog-digital conversion; hardware cost; least square estimate method; magnetic localization system; robotic wireless capsule; software processing; statistical characteristics; Biomedical engineering; Biomedical measurements; Chaos; Costs; Data engineering; Hardware; Least squares approximation; Signal processing; Signal resolution; Signal sampling; ADC resolution; least square estimate (LSE) method; magnetic localization system;
Conference_Titel :
Automation and Logistics, 2008. ICAL 2008. IEEE International Conference on
Conference_Location :
Qingdao
Print_ISBN :
978-1-4244-2502-0
Electronic_ISBN :
978-1-4244-2503-7
DOI :
10.1109/ICAL.2008.4636637
