OFDM技术在短波数据通信中的应用

Application of OFDM to HF Data Communication

提出一种应用于短波信道的数据传输方案 ,利用多路分时并行传输和交织技术来克服信号包络的瞬时衰落带来的不利影响 ,并对传输数据进行前向纠错 ,以便于接收端的正确解码。在 3kHz音频带宽内的仿真表明 ,方案在中低速率数据传输中具有隐蔽性高、抗干扰能力强等优点 ,具有广泛的应用前景。

This paper presents a novel HF communication scheme, in which OFDM technology and interleaving are used to suppress the fading effect in HF channels. Channel coding is used to improve the performance. Simulation results in voice frequency show that this scheme offers good security and anti-jamming performance in low-middle rate HF data communication.