基于VWDK调制的单边带广播系统

The HF-SSB broadcasting system of VWDK modulations

讨论了一种采用新的超窄带UNB技术的短波单边带(HF-SSB)广播系统。利用甚小波形差键控VWDK调制的类正弦波以及高调制效率特点,从而得到更好的脉冲压缩性能和测量精度。对VWDK结合SSB-SC的调制方式进行了理论分析,并给出了仿真结果。数值实验表明保证10^(-5)误码率(BER)的前提下,该系统传输所需信噪比为11分贝(dB)。最后,利用多个载波的超窄带频分复用(FDMA)复合方式,提供超大容量的超高速信息传输,仿真数据表明在5个频道复用时,信噪比为20dB即可达到10^(-5)误码率。

This paper discusses the HF-SSB broadcasting system of VWDK modulations which is a new technique of UNB system, The VWDK modulation signal which is a kind of sine-like waveform and high bandwidth efficiency can improve pulse compression performance and measuring accuracy. The performance of anti-interference of the system is analyzed theoretically and simulated. The simulation indicates that to ensure error rate below 10-5 SNR must above lldB.At last, FDMA can offer high speed signal transfers. The result shows that to ensure error rate below 10-5 SNR must above 20dB at five channels.