| 基于软件无线电的调频立体声激励器的设计与实现 |
| |
| 引用本文： | 杨平生,张云珠.基于软件无线电的调频立体声激励器的设计与实现[J].中国传媒大学学报,2006,13(1):20-24. |
| |
| 作者姓名： | 杨平生 张云珠 |
| |
| 作者单位： | 北京信威通信技术股份有限公司,北京,100094;北京信威通信技术股份有限公司,北京,100094 |
| |
| 摘 要： | 与传统采用模拟方式实现调制解调技术相比,全程数字化处理的调制器对信号处理的精度以及设备稳定性都有很大的提高.笔者在自行开发基于DSP FPGA DDS(带有IQ调制通道)结构的通用数字调制平台上,采用正交调制的方式实现了全数字调频激励器,这样避免了使用模拟方式造成的射频输出稳定性和同一性的下降,同时由于带有IQ调制通道的DDS对采样频率的内插提升,射频输出也无需再附加复杂的跟踪滤波器.
|
| 关 键 词： | 软件无线电 数字正交调制 AD9856 数字信号处理器 现场可编程门阵列 直接数字合成 调频算法 |
| 文章编号： | 1673-4793（2006）01-0020-5 |
| 收稿时间： | 2005-05-19 |
| 修稿时间： | 2005年5月19日 |
Design and Realization of FM Exciter Based on Software Defined Radio |
| |
| YANG Ping-sheng,ZHANG Yun-zhu.Design and Realization of FM Exciter Based on Software Defined Radio[J].Journal of Communication University of China Science and TEchnology,2006,13(1):20-24. |
| |
| Authors: | YANG Ping-sheng ZHANG Yun-zhu |
| |
| Abstract: | Compared with the conventional analog modulation,the adoption of full digitalization makes great progress in signal process precision of the device and performance and stability of the modulator.We design a general digital modulation platform based on DSP+FPGA+DDS(with IQ modulation channel) structure.Based on the research results,we use the means of orthogonal modulation to realize full digital FM exciter so as to avoid the distortions in radio frequency stability and consistency caused by using analog means.Meanwhile,because of the interpolation increase to the sample frequency by DDS with IQ modulation channel,there is no need to adding additional complicated tracking filter again. |
| |
| Keywords: | FM IQ AD9856 DSP TMS320c5409 DDS FPGA SDR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
