关键词: 无人机集群, 毫米波, 波束编码, 波束偏转, 自适应波束

Abstract: Millimeter wave beam coding technology is considered as an important solution to the UAV intelligent trunking communication network because of its high speed and strong anti-interference ability. However, in the communication scenario of UAV intelligent swarm, the unstable jitter of the body caused by various reasons will cause small angle deflection of the communication beam, resulting in the decline of the communication quality, thus affecting the control and decision-making of the UAV swarm. To solve this problem, this paper proposes an adaptive beam design method for UAV swarm communication. First, the equivalent channel model is established according to the jitter of the beam measured by the sensor. Then, the objective function is established by using the quantized channel model parameters, and the ideal beam coding vector is obtained. On this basis, the geometric greedy algorithm is used to decompose it. The simulation results show that the proposed scheme can effectively improve the average communication rate and reduce the computational complexity compared with other coefficient decomposition algorithms.

Key words: UAV swarm, millimeter wave, beam coding, beam deflection, adaptive beam