TY - GEN
T1 - Robust Hybrid Beamforming for Jittering UAV with MmWave Antenna Array
AU - Liu, Ke
AU - Liu, Yanming
AU - Mao, Tianqi
AU - Xiao, Zhenyu
AU - Xia, Xiang Gen
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Unmanned aerial vehicle (UAV) communication sys-tems with millimeter wave (mmWave) beamforming have good technical potential and wide applications. However, due to the directivity of mmWave beams, the jitter of the UAV platform may cause beam misalignment, and may cause severe loss of the channel gain, which has not been solved well yet. To this end, this paper considers data links between a jittering UAV base station (BS) equipped with a mm Wave antenna array and multiple ground access points (APs). A robust hybrid beamforming scheme is proposed for the UAV-BS by formulating an optimization problem to maximize the minimum achievable rate of all the APs. First, we design analog beamforming (ABF) through generating wide beams towards the APs in the angle domain based on chirp sequence, which can flexibly adjust beam direction and beam width. Afterwards, equivalent downlink channel estimation is obtained with fixed ABF. Finally, digital beamforming is performed with zero-forcing algorithm and water-filling power allocation. Extensive simulation results demonstrate that the proposed robust hybrid beamforming solution can provide satis-factory quality of service against the UAV jitter.
AB - Unmanned aerial vehicle (UAV) communication sys-tems with millimeter wave (mmWave) beamforming have good technical potential and wide applications. However, due to the directivity of mmWave beams, the jitter of the UAV platform may cause beam misalignment, and may cause severe loss of the channel gain, which has not been solved well yet. To this end, this paper considers data links between a jittering UAV base station (BS) equipped with a mm Wave antenna array and multiple ground access points (APs). A robust hybrid beamforming scheme is proposed for the UAV-BS by formulating an optimization problem to maximize the minimum achievable rate of all the APs. First, we design analog beamforming (ABF) through generating wide beams towards the APs in the angle domain based on chirp sequence, which can flexibly adjust beam direction and beam width. Afterwards, equivalent downlink channel estimation is obtained with fixed ABF. Finally, digital beamforming is performed with zero-forcing algorithm and water-filling power allocation. Extensive simulation results demonstrate that the proposed robust hybrid beamforming solution can provide satis-factory quality of service against the UAV jitter.
KW - UAV communications
KW - UAV jitter
KW - minimum achiev-able rate
KW - mmWave communications
KW - robust hybrid beamforming
UR - http://www.scopus.com/inward/record.url?scp=85139478966&partnerID=8YFLogxK
U2 - 10.1109/ICCC55456.2022.9880637
DO - 10.1109/ICCC55456.2022.9880637
M3 - Conference contribution
AN - SCOPUS:85139478966
T3 - 2022 IEEE/CIC International Conference on Communications in China, ICCC 2022
SP - 244
EP - 249
BT - 2022 IEEE/CIC International Conference on Communications in China, ICCC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE/CIC International Conference on Communications in China, ICCC 2022
Y2 - 11 August 2022 through 13 August 2022
ER -