密闭金属舱内无线通信系统设计与实现

Design and implementation of wireless communication system within enclosed metal cabin

针对民航客机、航天器等密闭金属舱内无线通信需求,首先在信道测量的基础上,给出了密闭金属舱统计信道参数,证明了该信道环境强多径的信道特点。继而设计了基于超宽带技术的抗强多径传输方案,在不同信道场景下,通过不同带宽及保护前缀方案设计解决了舱内多径衰落严重的问题。在此基础上,完成了物理层算法的硬件平台实现及密闭金属舱内的实验验证。实验表明,设计传输系统可以有效克服强多径效应,实现大容量低误码率传输。

Aiming at the wireless communication demand of enclosed metal cabin such as civil aircraft and spacecraft,the statistical channel parameters are given on the basis of channel measurement within an enclosed metal cabin,which proves the strong channel multipath channel characteristics. Then the transmission scheme which is robust to multipath based on ultra-wideband technology is provided.Under different channel environments,the serious problem of multipath fading is resolved through utilizing different length of prefix and bandwidth. On this basis,the physical layer algorithms are implemented and the experiments are performed within the enclosed metal cabin. Experimental results show that the design of transmission system can effectively overcome the multipath effect and achieve large capacity with low error rate.