OAMP for Low Complexity Detection in Large-Scale LDS Systems

Haifeng Wen1; Qu Luo2; Weijie Yua3; Zilong Liu4; Pei Xiao2

10.1109/IWSDA50346.2022.9870582

2022

2150-3680

978-1-6654-5299-1

2022 10th International Workshop on Signal Design and Its Applications in Communications (IWSDA)

1-5

1-5 Aug. 2022

Colchester, United Kingdom

This paper focuses on the low-complexity multiuser detection of coded low-density signature (LDS) systems where the numbers of resources and users are both large. Typically, the detection complexity using the conventional message passing algorithm grows exponentially with the number of users occupied at each resource, making it unaffordable for large-scale LDS systems. To address this problem, we propose to apply orthogonal approximate message passing (OAMP) to detect LDS symbols with polynomial complexity. The numerical results demonstrate the superiority of the proposed method in terms of the error performance over the traditional turbo receiver.

Multiuser detection Message passing Conferences Symbols Detectors Receivers Complexity theory

其他

IEEE

1.University of Electronic Science and Technology of China, Chengdu, China
2.University of Surrey, Surrey, UK
3.Southern University of Science and Technology, Shenzhen, China
4.University of Essex, Colchester, UK

Haifeng Wen,Qu Luo,Weijie Yua,et al. OAMP for Low Complexity Detection in Large-Scale LDS Systems[C],2022:1-5.