Pilot Assignment Method Based on Time-shifting and Space-Division in Massive MIMO Systems

Lin Zhou; Wei Li; Lili Zhao; Zhijie Mao; Yi Liu

doi:10.1109/ICWCAPP57292.2022.00059

2022 6th International Conference on Wireless Communications and Applications (ICWCAPP)

Pilot Assignment Method Based on Time-shifting and Space-Division in Massive MIMO Systems

Year: 2022, Pages: 213-216

DOI Bookmark: 10.1109/ICWCAPP57292.2022.00059

Authors

Lin Zhou, National University of Defense Technology,School of Information and Communication,Wuhan,Hubei,China,430000
Wei Li, National University of Defense Technology,School of Information and Communication,Wuhan,Hubei,China,430000
Lili Zhao, National University of Defense Technology,School of Information and Communication,Wuhan,Hubei,China,430000
Zhijie Mao, National University of Defense Technology,School of Information and Communication,Wuhan,Hubei,China,430000
Yi Liu, Xidian University,The State Key Laboratory of Integrated Service Network,Xi’an,China,710071

Abstract

To overcome the pilot pollution of large-scale multiple input multiple output (MIMO) systems caused by the repeated use of pilots in adjacent cells, a pilot assignment method based on time-shifting and space-division is proposed. Then, channel estimation error is analyzed. We derive the closed expression of the uplink and downlink rates to investigate the performance of the proposed scheme. Simulation results show that the proposed scheme can mitigate pilot contamination greatly and improve system performance.

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Pilot Assignment Method Based on Time-shifting and Space-Division in Massive MIMO Systems

Authors

Abstract

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