Two-stage BFGS-based hybrid precoding for mmWave multiuser MIMO systems

Millimetre wave (mmWave) communications are the most promising candidate for the future fifth-generation mobile broadband networks, which offer greater available spectrum than current cellular. However, the huge path loss and rain attenuation due to the characteristic of the mmWave channel make it d...

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Bibliographic Details
Published in:IET communications Vol. 13; no. 9; pp. 1271 - 1277
Main Authors: Dong, Fuwang, Wang, Wei, Qi, Biqing, Wang, Ben
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 04.06.2019
Subjects:
analogue radio‐frequency precoder
analogue RF precoder
baseband precoder
broadband networks
conventional MIMO systems
extension algorithm
fifth‐generation mobile broadband networks
fully digital precoding
hardware cost
high‐power consumption
hybrid precoding structure
massive multiinput‐multioutput systems
millimetre wave communications
MIMO communication
mmWave channel
mmWave multiuser MIMO systems
mmWave signals
multiuser mmWave systems
optimal fully digital precoder
optimisation
precoding
rain attenuation
Research Article
signal‐to‐noise ratios
single user systems
system sum‐rate
two‐stage Broyden–Fletcher–Goldfarb–Shanno
two‐stage Broyden–Fletcher–Goldfarb–Shanno‐based hybrid precoding
two‐stage hybrid precoding algorithm
wireless channels
millimetre wave communications
hardware cost
broadband networks
precoding
hybrid precoding structure
high-power consumption
two-stage hybrid precoding algorithm
conventional MIMO systems
single user systems
optimisation
mmWave multiuser MIMO systems
mmWave signals
mmWave channel
wireless channels
fifth-generation mobile broadband networks
massive multiinput-multioutput systems
MIMO communication
baseband precoder
signal-to-noise ratios
analogue RF precoder
rain attenuation
analogue radio-frequency precoder
two-stage Broyden–Fletcher–Goldfarb–Shanno-based hybrid precoding
optimal fully digital precoder
system sum-rate
fully digital precoding
two-stage Broyden–Fletcher–Goldfarb–Shanno
multiuser mmWave systems
extension algorithm
ISSN:1751-8628, 1751-8636
Online Access:Get full text
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Summary:Millimetre wave (mmWave) communications are the most promising candidate for the future fifth-generation mobile broadband networks, which offer greater available spectrum than current cellular. However, the huge path loss and rain attenuation due to the characteristic of the mmWave channel make it difficult to realise. Thanks to the small wavelength of mmWave signals, massive multi-input-multi-output (MIMO) systems can be leveraged to overcome the path loss. Unfortunately, in contrast to conventional MIMO systems, high-power consumption and hardware cost make fully digital precoding impractical. In this study, the authors study the hybrid precoding structure for multiuser mmWave systems, which compromises the cost and performance. First, an extension algorithm from single user systems, which directly decomposes the optimal fully digital precoder into a baseband precoder and an analogue radio-frequency (RF) precoder, is introduced according to the recent work. Then, the drawback of this kind of algorithm is analysed at high signal-to-noise ratios. Subsequently, a two-stage hybrid precoding algorithm, which is based on the minimum mean-squared error criterion is proposed, where the modified Broyden–Fletcher–Goldfarb–Shanno (BFGS) algorithm is presented to reduce the reconstruction error of computing the analogue RF precoder. Simulation results show that the proposed precoding algorithm can significantly improve the performance of the system sum-rate.
ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2018.5857