Title :
An improved method on the performance of hybrid filter banks of ADC due to realization errors
Author :
Yang, Yue ; Liu, Su-juan ; Chen, Jian-Xin
Author_Institution :
Dept. of Electron. Inf. & Control Eng., Beijing Univ. of Technol., Beijing
Abstract :
This paper studies the error of the hybrid filter banks (HFB) due to analog realization errors. It is shown that the architecture of HFB is much more sensitive to even small analog imperfections. Therefore, the performance of HFB has a dramatic deterioration. In order to improve the performance, a method named central frequency is presented. The results show that the value of max aliasing function the main restricting source of resolution in HFB ADC (analog-to-digital converter) decreases about 50 dB. And the SNR (signal-to-noise ratio) of the whole system is enhanced above 30 dB.
Keywords :
analogue-digital conversion; channel bank filters; digital-analogue conversion; ADC; analog imperfections; analog realization errors; analog-to-digital converter; central frequency method; digital-to-analog converter; hybrid filter banks; max aliasing function; signal-to-noise ratio; Bandwidth; Channel bank filters; Computer errors; Digital filters; Error correction; Filter bank; Frequency; Quantization; Sampling methods; Signal resolution;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697480
