无人机基站多用户MIMO系统设计与性能分析

The system design and performance analysis of the multi-user MIMO based on UAV base-station

随着通信技术的发展,高性能要求的通信系统需求更加迫切.文章提出了一种基于无人机基站构成的多用户-多输入多输出(MU-MIMO)通信系统,并对其进行建模和性能的探讨.(1)通过利用空间泊松点过程对空中无人机基站组成的系统进行建模;(2)考虑到一种基于正交的迫零波束成形算法(ZFBF)对该系统进行消除区域内干扰,以获得较高的信噪比;(3)对预编码后的基于无人机基站构成的MU-MIMO系统的容量、误码率以及中断率进行仿真实验.仿真表明该系统具有大容量、低误码率以及低中断率的特点,且分析了在不同情况下,其系统性能的变化情况.

With the development of communication technologies,the requirement for high-quality performance of the communication system is more urgent.In this paper,a multi-user multi-input multi-output(MU-MIMO)communication system based on Drone basestation(DBS)is proposed.Its modeling and performance are also studied.First,we model the system of aerial DBS-by using the Spatial Poisson Point Processes(PPP).Second,in order to get higher SNR,we consider an algorithm of Zero forcing beamforming(ZFBF)based on orthogonality to eliminate intra-regional interference.Finally,we simulate the system capacity,bit error rate and interruption probability of this system after precoding.The simulation shows that the system has the characteristics of large capacity,low error rate and low interruption probability.We also analyze the system performance difference under different circumstances.