| 数字接收机正交基带信号提取方案的研究 |
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| 引用本文： | 侯方西,曹达仲,刘开华,王柱.数字接收机正交基带信号提取方案的研究[J].通信技术,2002(8):23-25. |
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| 作者姓名： | 侯方西 曹达仲 刘开华 王柱 |
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| 作者单位： | 天津大学电子信息工程学院,天津,300072 |
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| 基金项目： | 天津市自然科学基金资助项目。 |
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| 摘 要： | 数字正交基带信号提取技术是数字中频接收机的一项关键技术。当前的经典实现方法有:正交数字混频法和多相滤波正交变换法。软件无线电的数字接收机正交基带信号提取方案多采用多相滤波法,数字信号处理器使用软件编程的方法来实现。介绍了采用软硬件联合实现数字正交基带信号提取的方案,用硬件电路设计降低软件实现复杂度。
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| 关 键 词： | 正交基带信号 中频采样 数字混频 多相滤波 |
| 修稿时间： | 2002年4月8日 |
The Study of Extraction of Digital Orthogonal Baseband Signal in Digital Receiver |
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| Hou Fangxi Cao Dazhong Liu Kaihua Wan gzhu.The Study of Extraction of Digital Orthogonal Baseband Signal in Digital Receiver[J].Communications Technology,2002(8):23-25. |
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| Authors: | Hou Fangxi Cao Dazhong Liu Kaihua Wan gzhu |
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| Abstract: | Extraction of digital Orthogonal baseband signal is one key techinique i n digital IF receiv-er and there are two classical algorithms to realize it:orthogonal digital mixing and polyphase filtering.T he latter is applied more extensively i n digital receiver based on the concept of software defined radio.In this paper,one method combining software and hardware to extract digital orthogonal baseband signal is present-ed,in which hardware design is appli ed to reduce the complexity of softwa re implementation. |
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| Keywords: | digital orthogonal baseband signal IF sampling digital mixing polyp hase filtering |
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