Research Article
Belief Propagation-Based Joint Iterative Detection and Decoding Algorithm for Asynchronous IDMA Satellite Systems
@INPROCEEDINGS{10.1007/978-3-030-67514-1_52, author={Shengfeng Li and Senlin Li and Xiang Chen and Ling Wang}, title={Belief Propagation-Based Joint Iterative Detection and Decoding Algorithm for Asynchronous IDMA Satellite Systems}, proceedings={IoT as a Service. 6th EAI International Conference, IoTaaS 2020, Xi’an, China, November 19--20, 2020, Proceedings}, proceedings_a={IOTAAS}, year={2021}, month={1}, keywords={Asynchronous IDMA Satellite systerm Detection and Decoding Belief Propagation (BP)}, doi={10.1007/978-3-030-67514-1_52} }- Shengfeng Li
Senlin Li
Xiang Chen
Ling Wang
Year: 2021
Belief Propagation-Based Joint Iterative Detection and Decoding Algorithm for Asynchronous IDMA Satellite Systems
IOTAAS
Springer
DOI: 10.1007/978-3-030-67514-1_52
Abstract
In recent years, a new emerging Interleave-Division Multiple Access (IDMA) developed from the Code-Division Multiple Access (CDMA), with its unique advantages, has been introduceded into the satellite communication systems to provide a new multi-user access solution. In IDMA satellite systems, the random distribution of the geographical locations of different user ends (UEs) within the coverage of the satellite ground spot beam will cause serious asynchronous transmission. In this case, the computational complexity of MUD will increase sharply compared to the case of synchronization. Unfortunately, although many simplified algorithms were studied, this problem is still not solved effectively. In this paper, inspired by the successful application of the Belief Propagation (BP)-based joint iterative detection and decoding algorithm in CDMA systems, we adopt this method in asynchronous IDMA satellite systems. Analysis and simulations verify that the BP-based iterative algorithm can effectively reduce the algorithm complexity and has better performance than traditional turbo iterative algorithms in the asynchronous IDMA satellite system.
