| 软件无线电中的A/D转换技术研究 |
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| 引用本文： | 黄红兵,曹敦,吴志敏. 软件无线电中的A/D转换技术研究[J]. 长沙交通学院学报, 2007, 23(4): 70-73 |
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| 作者姓名： | 黄红兵 曹敦 吴志敏 |
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| 作者单位： | 长沙理工大学,计算机与通信工程学院,湖南,长沙,410076 |
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| 摘 要： | 分析了多种A/D采样方式,通过比较CIC滤波器、ISOP滤波器及FIR滤波器的特点和性能,提出了用FIR滤波器实现数字信号下变频的设想,并结合软件无线电的特点和A/D转换的技术指标,论述了软件无线电中A/D转换的最佳实现方法,该方法降低了信号采样率,减轻了后续DSP处理基带信号的压力.
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| 关 键 词： | 软件无线电 带通抽样 抽取滤波器 |
| 文章编号： | 1000-9779（2007）04-0070-04 |
| 收稿时间： | 2007-09-05 |
| 修稿时间： | 2007-09-05 |
Research on A/D converting technology in software radio |
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| HUANG Hong-bing,CAO Dun,WU Zhi-min. Research on A/D converting technology in software radio[J]. Journal of Changsha Communications University, 2007, 23(4): 70-73 |
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| Authors: | HUANG Hong-bing CAO Dun WU Zhi-min |
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| Abstract: | Various methods of A/D sampling were analyzed in this paper.By comparing the features and performances of CIC filter,ISOP filter and FIR filter,an idea of utilizing FIR filter to realize digital signal DDC(digital down-conversion) was put forward.Combined with characters of software radio and specifications of A/D converting,the optimal realization method of A/D converting was discussed.The sampling rate and the load of DSP was decreased when the base band signal was processed. |
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| Keywords: | A/D |
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