Distributed transmit beamforming(DTB) is very efficient for extending the communication distance between a swarm of UAVs and the base,particularly when considering the constraints in weight and battery life for payloads on UAVs.In this paper,we review major function modules and potential solutions in realizing DTB in UAV systems,such as timing and carrier synchronization,phase drift tracking and compensation,and beamforming vector generation and updating.We then focus on beamforming vector generation and updating,and introduce a concatenated training scheme,together with a recursive channel estimation and updating algorithm.We also propose three approaches for tracking the variation of channels and updating the vectors.The effectiveness of these approaches is validated by simulation results.
类型: 期刊论文
作者: Yin Lu,Jun Fang,Zhong Guo,J.Andrew Zhang
来源: 中国通信 2019年01期
年度: 2019
分类: 信息科技,经济与管理科学,工程科技Ⅱ辑
专业: 航空航天科学与工程
单位: Jiangsu Provincial Key Laboratory of Wireless Communications,Nanjing University of Posts and Telecommunications,University of Technology Sydney
基金: supported by National Natural Science Foundation of China(No.61271236),Major Projects of Natural Science Research of Jiangsu Provincial Universities(No.17KJA510004),Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX17_0763)
分类号: V279;V243.1
页码: 15-25
总页数: 11
文件大小: 3147K
下载量: 35
本文来源: https://www.lunwen66.cn/article/32c3ef9ee511d94ef25486c6.html