摘要
针对现有的数据链路负载问题,提出数字OFDM调制方法。文中以VDES为研究背景,提出将高速传输技术正交频分复用(OFDM)集成到VDES系统中,进行物理层仿真建模,采用不同的数字调制方案模拟海上真实数据通信的误码率性能,并对其通信系统的性能进行仿真分析。结果表明,该方法可以实现较低的误码率,有效地实现海上甚高频数据通信。
A digital OFDM modulation method is proposed to solve the data link load.Based on the research background of VDES(VHF data exchange system),the high-speed transmission technique OFDM(orthogonal frequency division multiplexing)is integrated into the VDES system,the simulation modeling of physical layer is conducted,the bit error rate performance is simulated with real data communication at sea by means of different digital modulation schemes,and the performance of the communication system is simulated and analyzed.The results show that this method can realize the lower bit error rate,and realize VHF data communication effectively.
作者
刘畅
赵汝雪
LIU Chang;ZHAO Ruxue(School of Information Science Technology,Dalian Maritime University,Dalian 116026,China)
出处
《现代电子技术》
北大核心
2020年第6期78-81,共4页
Modern Electronics Technique
基金
国家科技支撑计划子课题(2015BAG20B02)
辽宁省博士启动基金(201601065)。
关键词
VDES
OFDM调制
自动识别系统
无线通信
误码率模拟
仿真分析
VDES
OFDM modulation
automatic identification system
wireless communication
bit error rate simulation
simulation analysis
