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SCIENTIA SINICA Informationis, Volume 49, Issue 6: 783(2019) https://doi.org/10.1360/N112018-00116

A low complexity grouping multi-user detection algorithm for the LDS multiple access system

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  • ReceivedMay 8, 2018
  • AcceptedAug 7, 2018
  • PublishedApr 28, 2019

Abstract

The complexity of the multiuser detection algorithm of the low-density spreading multiple access system is need to reduced. Based on the difference in the channel quality and signal power at the base station of each user in the uplink system, we propose a multi-user detection algorithm that reduces the computational complexity. This algorithm adopts group detection based on the user's instantaneous channel quality, and presents design criteria for user grouping and the corresponding indication matrix. The computational complexity of the algorithm is analyzed and the algorithm is simulated under different channel conditions. The simulation results show that the computational complexity of the algorithm is effectively reduced with a very small loss of user performance.


Funded by

国家自然科学基金(61471076)

重庆市基础研究与前沿探索项目(cstc2018jcyjAX0432,cstc2017jcyjAX0204)

长江学者和创新团队发展计划项目(IRT1299)

重庆市科委重点实验室专项经费


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