期刊论文

Improved Design and Application of Fractional Multiple Decimation Filter Based on FPGA

中文

南华大学学报(自然科学版)

1673-0062

2020

34

1

52-59

10.19431/j.cnki.1673-0062.2020.01.009

深圳市科技计划项目（JCYJ20160608214524052）； 中国科学院-威高研究发展计划攻关项目（中科院威高计划[2017]011号）； 广州大学科研能力提升计划项目（2018A001）:深圳市工程实验室项目（介入式诊疗一体化关键技术与工程实验室）；

本校为第一机构

为了滤除医学超声成像系统中数据采集的噪声,提高图像的完整度,保证图像实时显示帧率及减少FPGA硬件资源的占用,在传统的FIR分数倍抽取滤波器的基础上,提出了一种改进结构。此结构仅利用一个乘法器,解决了传统结构中资源占用多,插值、抽取操作效率低等问题,提高了系统的工作效率和稳定性。通过Matlab、Vivado、Questasim仿真测试及系统成像对比,验证了此结构的可行性,与其他结构滤波器相比,减少了对Dsp、Bram等硬件资源的占用,以满足系统的实际需求。

In order to filter out the noise of data acquisition in medical ultrasound imaging system,improve the integrity of the image,ensure the real-time display frame rate of the image and reduce the occupation of FPGA hardware resources,an improved structure is proposed based on the traditional FIR fractional decimation filter.This structure only utilizes a multiplier,which solves the problem of high resource occupation,low interpolation and extraction operation efficiency in the traditional structure,and improves the working efficiency and stability of the system.Through Matlab,Vivado,Questasim sim...