摘要
正交频分复用(OFDM)技术由于其高效的频谱利用率和良好的抗多径和频率选择性衰落性能,成为无人机通信链路数据传输技术的一种可能的解决方案。针对无人机数据链系统技术指标要求,给出了OFDM系统参数设计和同步需求分析,提出了有效的OFDM同步技术方案,并在实用的无人机信道下对系统同步性能进行了仿真和分析。仿真结果表明,所提技术方案具有较好的同步性能和误码率性能,能够满足OFDM无人机数据链系统性能要求。
Due to its high spectrum efficiency and high performance, OFDM is considered as a strong candidate in support of the high data rate transmission for unmanned aircraft vehicle （UAV） data link. According to system specifications of UAV data link, the parameters design and synchronization requirements analysis of OFDM system are provided, then an effective synchronization scheme is proposed. Simulations are conducted on pratical UAV channel for system performance evaluation. The result shows that the proposed synchronization scheme can meet the system performance requirements of OFDM-based UAV data link.
出处
《通信技术》
2010年第1期17-19,共3页
Communications Technology
