| 宽带多速率通用数字调制器的设计与实现 |
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| 引用本文： | 王华,王政,解延安,匡镜明. 宽带多速率通用数字调制器的设计与实现[J]. 北京理工大学学报, 2006, 26(8): 725-728 |
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| 作者姓名： | 王华 王政 解延安 匡镜明 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 设计了宽带通用调制器结构,分析了该调制器硬件实现的关键技术,给出了基带脉冲成形数字滤波器、多速率插值的CIC滤波器及时钟信号产生的具体实现方法. 利用矢量信号分析仪对调制器进行了测试. 测试结果表明,该调制器可产生速率为0.5～50.0MS/s的通用数字调制信号,矢量幅度误差和频谱满足通信标准的要求.
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| 关 键 词： | 数字调制 成形滤波器 CIC滤波器 调制器 |
| 文章编号： | 1001-0645(2006)08-0725-04 |
| 收稿时间： | 2006-03-06 |
| 修稿时间： | 2006-03-06 |
Design and Implementation of Multi-Rate Wideband General-Purpose Digital Modulator |
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| WANG Hu,WANG Zheng,XIE Yan-an and KUANG Jing-ming. Design and Implementation of Multi-Rate Wideband General-Purpose Digital Modulator[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2006, 26(8): 725-728 |
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| Authors: | WANG Hu WANG Zheng XIE Yan-an KUANG Jing-ming |
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| Affiliation: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The architecture for implementing a wideband general-purpose digital modulator is proposed.Key points of its hardware implementation are then analyzed.Methods of realization are given,viz.,baseband PSF(pulse shaping filter),CIC(cascaded integrator comb) filter and clock generator.The implemented wideband modulator is tested by the VSA(vector signal analyzer).Test results showed that the design scheme is correct.The modulator can produce general digital modulation signals with symbol rates from 0.5?MS/s to 50.0?MS/s.Both EVM(error vector magnitude) and spectrum mask meet the requirements of communication standard. |
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| Keywords: | digital modulation pulse shaping filter CIC filter modulator |
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