TY - JOUR
T1 - On the Design of Optimal One-Shot Distributed Combining for Cooperative Multi-UAV Systems
AU - Pan, Xuesong
AU - Zheng, Zhong
AU - Fei, Zesong
AU - Zhang, Zhongpei
N1 - Publisher Copyright:
© 1967-2012 IEEE.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - Unmanned aerial vehicle (UAV) networks will become one of the key components of the future mobile communication systems, especially suitable for on-demand coverage extension and prompt capacity enhancement. However, UAV networks, detached from the ground infrastructure, are usually constrained for traffic-intensive network-wide signal processing. This paper tackles this issue by considering the multi-user signal detection at the UAV swarm, where the uplink signals of multiple ground users are cooperatively recovered. In particular, to reduce the signaling exchange and the coordination latency, a two-stage distributed minimum mean squared error (MMSE) detection is proposed for the UAV swarm, which merges the local MMSE detections at each UAV with one-shot weighted combining at a central station. The combining weights only depend on the long-term statistical channel state informations (CSIs) and therefore, are suitable for distributed network with limited signaling exchange. Numerical results show that the proposed distributed MMSE detection achieves similar performance to the centralized MMSE detection.
AB - Unmanned aerial vehicle (UAV) networks will become one of the key components of the future mobile communication systems, especially suitable for on-demand coverage extension and prompt capacity enhancement. However, UAV networks, detached from the ground infrastructure, are usually constrained for traffic-intensive network-wide signal processing. This paper tackles this issue by considering the multi-user signal detection at the UAV swarm, where the uplink signals of multiple ground users are cooperatively recovered. In particular, to reduce the signaling exchange and the coordination latency, a two-stage distributed minimum mean squared error (MMSE) detection is proposed for the UAV swarm, which merges the local MMSE detections at each UAV with one-shot weighted combining at a central station. The combining weights only depend on the long-term statistical channel state informations (CSIs) and therefore, are suitable for distributed network with limited signaling exchange. Numerical results show that the proposed distributed MMSE detection achieves similar performance to the centralized MMSE detection.
KW - Stieltjes transform
KW - Unmanned aerial vehicles
KW - deterministic equivalents
KW - distributed MMSE
UR - http://www.scopus.com/inward/record.url?scp=85146247132&partnerID=8YFLogxK
U2 - 10.1109/TVT.2022.3230040
DO - 10.1109/TVT.2022.3230040
M3 - Article
AN - SCOPUS:85146247132
SN - 0018-9545
VL - 72
SP - 6827
EP - 6832
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 5
ER -