| 摘要: |
| 提出了一种适应于宽带扩频通信系统的数字中频调制的实现方案,它基于正交调制、DDS、数字上变频和数字内插等技术,采用通用硬件平台,可以生成多种中频调制信号,可广泛用于数字化扩频通信电台、宽带CDMA、软件无线电、遥控遥测等通信系统中。 |
| 关键词: 扩频通信系统,数字中频,正交扩频调制器,DDS,数字内插 |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:July 31, 2003 |
| 基金项目: |
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| Implementation of a General Digital IF Quadrature Spread Spectrum Modulator |
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| () |
| Abstract: |
| A digital IF modulator for wideband spread spectrum communication system is proposed, which can generate a variety of IF modulation signals based on technologies of quadrature modulation,DDS,digital upconversion and digital interpolation,etc.It is implemented on a general hardware platform and can be extensively used in many communication systems such as digitized spread spectrum radio, wideband CDMA, software radio and telemetry and telecommand system. |
| Key words: Spread spectrum communication system,Software radio,Digital IF,Quadrature spread spectrum modulator,DDS,Digital interpolation |
