| 软件无线电数字下变频及抽取技术研究 |
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| 引用本文： | 秦明伟,李德建,姚远程.软件无线电数字下变频及抽取技术研究[J].通信技术,2008,41(9). |
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| 作者姓名： | 秦明伟 李德建 姚远程 |
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| 作者单位： | 1. 西南科技大学,信息工程学院,四川,绵阳,621010
2. 航天061基地3408厂,贵州,遵义,563100 |
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| 基金项目： | 西南科技大学校科研和校改项目 |
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| 摘 要： | 数字采样及数字下变频技术是研究软件无线电接收机的重要内容之一.其中针对多种速率信号的采样,对可变的信号符号率与固定的系统采样率进行实时匹配问题,是研究多速率信号数字化所遇到的难点问题之一.文中通过抽取和内插技术的组合解决了这一问题.并在此基础上着重研究了高速抽取和内插的多项滤波结构,为数据率的快速匹配奠定了基础.
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| 关 键 词： | 多相滤波 符号率转换 子带抽取 数字下变频 软件无线电 |
Software Defined Radio DDC and Decimation Technology |
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| QIN Ming-wei,LI De-jian,YAO Yuan-cheng.Software Defined Radio DDC and Decimation Technology[J].Communications Technology,2008,41(9). |
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| Authors: | QIN Ming-wei LI De-jian YAO Yuan-cheng |
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| Affiliation: | QIN Ming-wei ,LI De-jian ,YAO Yuan-cheng (School of Information Engineering,Southwest University of Science , Technology,Mianyang Sichuan 621010,China,No.3408 factory,Aerospace 061base,Zunyi Guizhou 563100,China) |
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| Abstract: | Digital sampling and digital down-conversion technologies are important contents for study of software defined radio receiver.Sampling,which is aiming at multiple rate signals,and real time matching for the variable information symbol rate and fixed system sampling rate,are hard problems in researching the digitization of multi-rate signal.In this paper,these problems are solved by the combination of decimation and interpolation technologies.Based on this,the polyphase filter structure of the high-speed dec... |
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| Keywords: | polyphase filter symbol conversion subband decimation digital down conversion software defined radio |
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