User Selection and Leakage-based Precoding for Coordinated Dual-satellite System
- Resource Type
- Conference
- Authors
- Wang, Xinqian; Wang, Qi; Chai, Mingyang; Zhu, Chaoyi; Zhang, Zhengyu; Zhou, Wuyang
- Source
- 2021 7th International Conference on Computer and Communications (ICCC) Computer and Communications (ICCC), 2021 7th International Conference on. :6-10 Dec, 2021
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Satellite antennas
Satellites
Scheduling algorithms
Precoding
Simulation
Interference
Throughput
Dual-satellite system
user selection
capacity optimization
precoding
- Language
Inter-satellite coordination has been considered to meet the increasing throughput demand and reduce inter-satellite interference. And user selection is necessary since the users on the ground are far more than the available satellite antennas. However, the existing studies rarely investigate user selection for improving the capacity of the dual-satellite systems. Aiming at maximizing the capacity of the dual-satellite systems, we propose an efficient user selection algorithm. The two sets of users served by two satellites are selected from the candidate users based on the system capacity maximization. The intra-satellite and inter-satellite interference of the selected users are reduced by the precoding scheme which maximizes the signal-to-leakage-and-noise-ratio (SLNR). Simulation results show that our proposed algorithm has greater system capacity compared with the existing user selection algorithms and the leakage-based precoding is more suitable for satellite communication than ZF precoding.