短波软件无线电

The HF Software Radio

在近年提出的软件无线电技术的基础上，结合短波通信的特点，讨论了一种短波软件无线电的实现。实现的基础是数字信号处理器（ＤＳＰ）的可重置性和带限信号的采样原理。系统主要由高速Ａ／Ｄ＆Ｄ／Ａ、可编程ＤＳＰ模块以及多媒体ＰＣ构成，它具有完全的可编程性（如工作频率、调制方式、传输速率等），而且调试和升级非常便捷。

In this paper, we discuss an HF software radio on the basis of the latest software radio technology and the characteristics of HF communication,which is realized through the reconfigurability of digital signal processors(DSP) and the theory of bandpass signal sampling. The system mainly consists of high-speed A/D & D/A, programmable DSP module,and multimedia PC,and is completely programmable in terms of frequency band, channel modulation,data rates,etc,debuggable and upgradable.