Research Article
Multi-user Shared Access Research in Cell-Free Massive MIMO
@INPROCEEDINGS{10.1007/978-3-030-93398-2_72, author={Haoran Zhang and Shaochuan Wu}, title={Multi-user Shared Access Research in Cell-Free Massive MIMO}, proceedings={Wireless and Satellite Systems. 12th EAI International Conference, WiSATS 2021, Virtual Event, China, July 31 -- August 2, 2021, Proceedings}, proceedings_a={WISATS}, year={2022}, month={1}, keywords={Cell-free massive MIMO MUSA Spectrum efficiency}, doi={10.1007/978-3-030-93398-2_72} }- Haoran Zhang
Shaochuan Wu
Year: 2022
Multi-user Shared Access Research in Cell-Free Massive MIMO
WISATS
Springer
DOI: 10.1007/978-3-030-93398-2_72
Abstract
With the advent of the 5G era, massive device access and explosive data traffic grow rapidly, it is imperative to improve network throughput. As a new network architecture, Cell-Free Massive MIMO can effectively improve network throughput. MUSA (Multi-user shared access), as a kind of NOMA (non-orthogonal multiple access technology), has a great gain in spectrum efficiency. Integrating MUSA’s related technologies into the Cell-Free Massive MIMO system can effectively improve the spectrum efficiency and meet the massive access requirements.
In this paper, by using MUSA, the Cell-Free Massive MIMO system is improved. A clustering method is proposed. Each cluster corresponds to a pilot. Users in the cluster use MUSA to distinguish and detect multi-users. For the new model, theoretical analysis and simulation of spectrum efficiency are carried out. The results show that the improved Cell-Free Massive MIMO system has better spectrum efficiency.
