Cooperative Multi-User Detection for Satellite IoT under Constrained ISLs
- Resource Type
- Conference
- Authors
- Miao, Sirui; Ye, Neng; Ouyang, Qiaolin; Wang, Peisen; Li, Xiangming; Zhao, Lian
- Source
- 2023 IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Personal, Indoor and Mobile Radio Communications (PIMRC), 2023 IEEE 34th Annual International Symposium on. :1-6 Sep, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Robotics and Control Systems
Signal Processing and Analysis
Multiuser detection
Analytical models
Costs
Simulation
Message passing
Satellite broadcasting
Bandwidth
Multi-user detection
message passing algorithm
inter-satellite link
- Language
- ISSN
- 2166-9589
The densely deployment of satellites enables the realization of direct-to-satellite Internet-of-things system with tremendous terminals through multi-satellite cooperation. Multi-user detection (MUD) based on cooperative satellite network can dramatically increase the detection performance. However, it is chained by the limited number of inter-satellite link (ISL) bandwidth resources. To cope with the stringent constraints on ISLs, we propose a novel auxiliary node (AN)-aided factor graph and the corresponding multi-user detection (MUD) algorithm named auxiliary node-cooperative message passing algorithm (AN-CMPA). Simulation results show that our proposed algorithm achieves only 0.5dB loss with 75% decreased information cost under effectively designed information filter criterion.