Adaptive Pilot Allocation for Multi-Cell Massive MIMO Systems

Jiahui Li; Limin Xiao; Shidong Zhou

doi:10.1109/LWC.2020.2976941

Adaptive Pilot Allocation for Multi-Cell Massive MIMO Systems

Jiahui Li^*
, Limin Xiao
, Shidong Zhou

^*Corresponding author for this work

Tsinghua University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In the upcoming 5G system, the massive MIMO technology will perform an important role in significantly improving the system performance. To sufficiently exploit the potential of massive MIMO, the transceiver should perform appropriate accurate channel estimation, including carefully designed quantities of pilot resource and its allocation among different users. In this letter, a low-complexity adaptive pilot allocation algorithm using the second-order channel statistics of all users is proposed, which helps in finding a good balance between the allocated pilot length and pilot training interference. Numerical results indicate that the proposed algorithm can significantly improve the net spectrum efficiency in multi-cell massive MIMO systems.

Original language	English
Article number	9018256
Pages (from-to)	972-975
Number of pages	4
Journal	IEEE Wireless Communications Letters
Volume	9
Issue number	7
DOIs	https://doi.org/10.1109/LWC.2020.2976941
State	Published - Jul 2020
Externally published	Yes

Keywords

Adaptive pilot reuse
massive MIMO
multi-cell

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10.1109/LWC.2020.2976941

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abstract = "In the upcoming 5G system, the massive MIMO technology will perform an important role in significantly improving the system performance. To sufficiently exploit the potential of massive MIMO, the transceiver should perform appropriate accurate channel estimation, including carefully designed quantities of pilot resource and its allocation among different users. In this letter, a low-complexity adaptive pilot allocation algorithm using the second-order channel statistics of all users is proposed, which helps in finding a good balance between the allocated pilot length and pilot training interference. Numerical results indicate that the proposed algorithm can significantly improve the net spectrum efficiency in multi-cell massive MIMO systems.",

keywords = "Adaptive pilot reuse, massive MIMO, multi-cell",

author = "Jiahui Li and Limin Xiao and Shidong Zhou",

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AB - In the upcoming 5G system, the massive MIMO technology will perform an important role in significantly improving the system performance. To sufficiently exploit the potential of massive MIMO, the transceiver should perform appropriate accurate channel estimation, including carefully designed quantities of pilot resource and its allocation among different users. In this letter, a low-complexity adaptive pilot allocation algorithm using the second-order channel statistics of all users is proposed, which helps in finding a good balance between the allocated pilot length and pilot training interference. Numerical results indicate that the proposed algorithm can significantly improve the net spectrum efficiency in multi-cell massive MIMO systems.

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Adaptive Pilot Allocation for Multi-Cell Massive MIMO Systems

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Keywords

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