Research Article
An Improved MAX-Log MPA Multiuser Detection Algorithm in SCMA System
@INPROCEEDINGS{10.1007/978-3-030-90196-7_27, author={Guanghua Zhang and Zongyuan Fan and Zonglin Gu and Lin Zhang and Xiaoxin Wang and Weidang Lu}, title={An Improved MAX-Log MPA Multiuser Detection Algorithm in SCMA System}, proceedings={Artificial Intelligence for Communications and Networks. Third EAI International Conference, AICON 2021, Xining, China, October 23--24, 2021, Proceedings, Part I}, proceedings_a={AICON}, year={2021}, month={11}, keywords={SCMA Node message MPA BER}, doi={10.1007/978-3-030-90196-7_27} }- Guanghua Zhang
Zongyuan Fan
Zonglin Gu
Lin Zhang
Xiaoxin Wang
Weidang Lu
Year: 2021
An Improved MAX-Log MPA Multiuser Detection Algorithm in SCMA System
AICON
Springer
DOI: 10.1007/978-3-030-90196-7_27
Abstract
Sparse code multiple access (SCMA) technology is a new type of Non-Orthogonal Multiple Access (NOMA) technology for next-generation mobile communications. Aiming at the poor bit error rate (BER) performance of Max-Log messaging scheme (MPA) based on log domain in SCMA technology. In this paper, the user node message and the resource node message are updated simultaneously, the threshold value is set and the stability judgment of the user node is increased, and the above two methods are combined. Three improved multi-node detection algorithms, namely, S-Max-Log-MPA, T-Max-Log-MPA, and S-T-Max-Log-MPA, are proposed. Through simulation, the BER performance of these three algorithms is obtained and their performance characteristics are compared and summarized.
