Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback

Yaqiong Zhao; Wei Xu; Jindan Xu; Shi Jin; Kezhi Wang; Mohamed Slim Alouini

doi:10.1109/LCOMM.2020.2999646

Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback

Yaqiong Zhao, Wei Xu^*, Jindan Xu, Shi Jin, Kezhi Wang, Mohamed Slim Alouini

^*Corresponding author for this work

Computer Information Sciences Department

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

14 Citations (Scopus)

Abstract

In this letter, we study the performance of a downlink multiuser massive multiple-input multiple-output (MIMO) system with sub-connected structure over limited feedback channels. Tight rate approximations are theoretically analyzed for the system with pure analog precoding and hybrid precoding. The effect of quantized analog and digital precoding is characterized in the derived expressions. Furthermore, it is revealed that the pure analog precoding outperforms the hybrid precoding using maximal-ratio transmission (MRT) or zero forcing (ZF) under certain conditions, and we theoretically characterize the conditions in closed form with respect to signal-to-noise ratio (SNR), the number of users and the number of feedback bits. Numerical results verify the derived conclusions on both Rayleigh channels and mmWave channels.

Original language	English
Article number	9107073
Pages (from-to)	2319-2323
Number of pages	5
Journal	IEEE Communications Letters
Volume	24
Issue number	10
Early online date	3 Jun 2020
DOIs	https://doi.org/10.1109/LCOMM.2020.2999646
Publication status	Published - 1 Oct 2020

Keywords

analog precoding
hybrid precoding
limited feedback
Massive MIMO

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10.1109/LCOMM.2020.2999646

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title = "Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback",

abstract = "In this letter, we study the performance of a downlink multiuser massive multiple-input multiple-output (MIMO) system with sub-connected structure over limited feedback channels. Tight rate approximations are theoretically analyzed for the system with pure analog precoding and hybrid precoding. The effect of quantized analog and digital precoding is characterized in the derived expressions. Furthermore, it is revealed that the pure analog precoding outperforms the hybrid precoding using maximal-ratio transmission (MRT) or zero forcing (ZF) under certain conditions, and we theoretically characterize the conditions in closed form with respect to signal-to-noise ratio (SNR), the number of users and the number of feedback bits. Numerical results verify the derived conclusions on both Rayleigh channels and mmWave channels.",

keywords = "analog precoding, hybrid precoding, limited feedback, Massive MIMO",

author = "Yaqiong Zhao and Wei Xu and Jindan Xu and Shi Jin and Kezhi Wang and Alouini, {Mohamed Slim}",

note = "Funding Information: This work was supported in part by the National Key Research and Development Program 2018YFA0701602, the Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars under Grant BK20190012, and the NSFC under Grants 61871109, 61941115, and 61871108.",

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doi = "10.1109/LCOMM.2020.2999646",

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T1 - Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback

AU - Zhao, Yaqiong

AU - Xu, Wei

AU - Xu, Jindan

AU - Jin, Shi

AU - Wang, Kezhi

AU - Alouini, Mohamed Slim

N1 - Funding Information: This work was supported in part by the National Key Research and Development Program 2018YFA0701602, the Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars under Grant BK20190012, and the NSFC under Grants 61871109, 61941115, and 61871108.

PY - 2020/10/1

Y1 - 2020/10/1

N2 - In this letter, we study the performance of a downlink multiuser massive multiple-input multiple-output (MIMO) system with sub-connected structure over limited feedback channels. Tight rate approximations are theoretically analyzed for the system with pure analog precoding and hybrid precoding. The effect of quantized analog and digital precoding is characterized in the derived expressions. Furthermore, it is revealed that the pure analog precoding outperforms the hybrid precoding using maximal-ratio transmission (MRT) or zero forcing (ZF) under certain conditions, and we theoretically characterize the conditions in closed form with respect to signal-to-noise ratio (SNR), the number of users and the number of feedback bits. Numerical results verify the derived conclusions on both Rayleigh channels and mmWave channels.

AB - In this letter, we study the performance of a downlink multiuser massive multiple-input multiple-output (MIMO) system with sub-connected structure over limited feedback channels. Tight rate approximations are theoretically analyzed for the system with pure analog precoding and hybrid precoding. The effect of quantized analog and digital precoding is characterized in the derived expressions. Furthermore, it is revealed that the pure analog precoding outperforms the hybrid precoding using maximal-ratio transmission (MRT) or zero forcing (ZF) under certain conditions, and we theoretically characterize the conditions in closed form with respect to signal-to-noise ratio (SNR), the number of users and the number of feedback bits. Numerical results verify the derived conclusions on both Rayleigh channels and mmWave channels.

KW - analog precoding

KW - hybrid precoding

KW - limited feedback

KW - Massive MIMO

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JF - IEEE Communications Letters

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ER -

Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback

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Keywords

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