摘要
短波信道是一种变参信道,存在严重的衰落和干扰。本文讨论了信道对数据信号传输的影响,并详细叙述了用于中短距离数据通信的微型短波数据终端的设计思想,最后还提供了该终端的硬件系统框图及信道实验结果。
In this paper, based on the analysis of the HF communication channel, a small type data terminal used in HF communication is presented. The key technipues used in the system are: Combined Frequency and Time-Shift keyed Transmission System, Reed-Solomon error-correction Code, Interleave-Deinterleave technique and correlated preamble detection. The analytical and experimental results have shown that this terminal in satisfactory.
