| 摘要: |
| 介绍了频率响应屏蔽(FRM)技术在采样率变换技术中的应用,分析了FRM的简化结构——内插滤波器的设计方法。将此滤波器应用于采样率变换中,并结合多相滤波思想提出了一种高效的FRM采样率变换结构,此结构能极大降低采样率变换实现复杂度。最后通过设计实例,验证了此结构的高效性。 |
| 关键词: 软件无线电 数字滤波器 采样率变换,频率响应屏蔽 内插 窄过渡带宽 |
| DOI： |
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| 基金项目:国家高技术研究发展计划(863计划)
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| A New Sampling Rate Alteration Structure Based on Frequency Response Masking (FRM) Technique |
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| Abstract: |
| The application of frequency-response masking(FRM)technique in sampling rate conversion(SRC)technology is introduced.The design method of interposition filter,which is a simplified FRM filter,is also analyzed.Combining to multiphase filter thought,a high efficient FRM SRC structure is proposed through applying the filter to SRC.This structure can reduce the complexity of SRC at most.Finally,the high efficiency of this structure is verified through a designed example. |
| Key words: software radio,digital FIR,sampling rate conversion,frequency response masking,interpolation,sharp transition bandwidth |
