MIMO-OFDM技术在无人机数据链中的仿真运用

摘要

Aiming at the more requirements of unmanned aircraft vehicle (UAV) information transmission rate and reliability, research on simulation of MIMO-OFDM in UAV data link. Based on analysis of technology features of MIMO and OFDM, put forwards MIMO-OFDM technology UAV data link model, use Matlab to simulate MIMO and SISO UAV data link bit error rate performances adopt OFDM technology, then give the further research content. The simulation results show that, use MIMO-OFDM technology can effectively reduces bit error rate, overcomes inter symbol interference, and is better suited to the UAV data link than the traditional SISO system and single carrier transmission technique.%针对日益增长的无人机信息传输速率和可靠性要求，对MIMO-OFDM技术在无人机数据链中的仿真运用进行研究。在分析 MIMO 和 OFDM 技术特点的基础上，提出使用 MIMO-OFDM 技术的无人机数据链模型，利用Matlab对采用OFDM技术的MIMO和SISO无人机数据链误码率性能进行仿真，并指出下一步研究内容。仿真结果表明：采用MIMO-OFDM技术可有效降低误码率，克服码间干扰，比传统SISO和单载波更加适合无人机通信。