数据采集与处理Issue(3)：627-635,9.DOI:10.16337/j.1004-9037.2015.03.019
基于后置带通滤波的中频信号A／D变换精度提高方法
Method of Improving Resolution of A/D Conversion in Intermediate-Frequency Signals Based on Post Bandpass Filtering
摘要
Abstract
Howto achieve high‐resolution ADCs from low‐resolution ones by filtering quantization noise is the key problem of signal processing researchers .Considering IF bandpass signals in communication ,a method is proposed to reduce the quantization noise and improve the resolution of A/D conversion by adding a post‐bandpass filter .Then the method is analyzed and tested by numerical simulations with a common IF bandpass signal as an example .Results showthat the quantization noise is observably re‐duced ,through bandpass filtering for quantized signals .Therefore ,the A/D conversion performance are improved obviously .In addition ,in the aspect of theory ,this paper revises certain traditional views on the statistic model of quantization noise and loosens the assumption condition that the quantization noise is a white one .关键词
后置带通滤波/量化噪声/A/D变换Key words
post-bandpass filtering/quantization noise/A/D conversion分类
信息技术与安全科学引用本文复制引用
陈媛,马曼丽,殷勤业..基于后置带通滤波的中频信号A／D变换精度提高方法[J].数据采集与处理,2015,(3):627-635,9.基金项目
国家创新群体科学基金（61221063）资助项目；国家自然科学基金（61071125，61071216，61102081，61172093）资助项目。 （）
