摘要
短波(High Frequency,HF)通信受信道和干扰影响严重。美军标MIL-STD-188-141D定义了新一代短波自动链路建立(Automatic Link Establish,ALE)技术体制,其附录G定义了ALE物理层标准波形。因此,介绍双多进制正交扩频调制技术的原理,分析并给出了一种低复杂度的求解软信息的解扩算法,设计了基于双多进制正交扩频技术的改进波形,并将改进波形与标准波形在加性高斯白噪声下进行了性能仿真对比。仿真结果表明,改进波形比标准波形能够明显提升一定的通信能力。
HF(High Frequency)communication is seriously affected by channel and interference.The US military standard MIL-STD-188-141D defines a new generation of HF ALE(Automatic Link Establish)technology system,and its appendix G defines ALE physical layer standard waveform.Therefore,the principle of the dual N-ary orthogonal spread spectrum modulation technology is introduced,and a low complexity algorithm for solving soft information is analyzed and given.The improved waveform based on the dual N-ary orthogonal spread spectrum technology is designed,and the performance simulation comparison between the improved waveform and the standard waveform is carried out under the additive Gaussian white noise.The simulation results indicate that the improved waveform can significantly improve the communication ability compared with the standard waveform.
作者
张亘
阳睿
杨恩蘋
牛吉凌
ZHANG Gen;YANG Rui;YANG En-pin;NIU Ji-ling(No.30 Institute of CETC,Chengdu Sichuan 610041,China)
出处
《通信技术》
2020年第10期2425-2428,共4页
Communications Technology
