摘要
FIR滤波器系数的量化方法不仅影响到滤波器性能,还直接影响到整个电路系统的性能。分析了传统滤波器系数量化方法对滤波器性能的影响,提出了基于滤波器增益的系数量化方法,给出了MATLAB及FPGA实现后的ModelSim仿真测试数据,结果表明这种方法最多可将滤波输出幅度提高近一倍,信噪比提高近6 dB。
The method of FIR filter coefficient quantization has influence not only on the filter performance,but also on the circuit system performance.Normal filter coefficient quantization method is analyzed,and a new method of filter coefficient quantization based on filter gain is proposed.A low pass filter based on the new quantization method is designed with MATLAB and implemented on FPGA.ModelSim simulation results show that the new method can improve the output signal′s amplitude and SNR effectively.
作者
杜勇
Du Yong(College of Electronics and Information Engineering,Sichuan Technology and Business University,Chengdu 611745,China)
出处
《电子技术应用》
2019年第4期52-54,59,共4页
Application of Electronic Technique
