Hybrid precoding in point-to-point massive multiple-input multiple-output systems based on normalised matrix adaptive method

The potential of millimetre wave frequencies band has motivated the study of large-scale antenna arrays to improve the spectrum efficiency of massive multiple-input multiple-output wireless communications systems. However, conventional fully digital precoding schemes, which require one radio frequen...

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Vydané v:IET communications Ročník 11; číslo 12; s. 1882 - 1885
Hlavní autori: Feng, Yongpan, Kim, Suk Chan
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: The Institution of Engineering and Technology 24.08.2017
Predmet:
computational complexity
fully digital precoding
hybrid precoding
large‐scale antenna arrays
massive MIMO wireless communications systems
matrix algebra
millimetre wave antenna arrays
millimetre wave frequencies
MIMO communication
NMAM
normalised matrix adaptive method
numerical analysis
numerical simulations
phase matrix variable
point‐to‐point massive multiple‐input multiple‐output systems
precoding
radio spectrum management
radiofrequency chain
Research Article
RF chain
RF precoder
spectrum efficiency function
spectrum efficiency improvement
RF precoder
radio spectrum management
normalised matrix adaptive method
numerical simulations
radiofrequency chain
spectrum efficiency improvement
RF chain
spectrum efficiency function
point-to-point massive multiple-input multiple-output systems
phase matrix variable
precoding
fully digital precoding
matrix algebra
NMAM
large-scale antenna arrays
hybrid precoding
numerical analysis
massive MIMO wireless communications systems
millimetre wave antenna arrays
millimetre wave frequencies
MIMO communication
computational complexity
ISSN:1751-8628, 1751-8636
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Popis
Shrnutí:The potential of millimetre wave frequencies band has motivated the study of large-scale antenna arrays to improve the spectrum efficiency of massive multiple-input multiple-output wireless communications systems. However, conventional fully digital precoding schemes, which require one radio frequency (RF) chain for each antenna, are cost prohibitive and have high-power consumption. To address these hardware limitations, this study considers a hybrid precoding scheme that provides high performance in terms of spectrum efficiency. By deducing the derivative of the spectrum efficiency function with respect to the phase matrix variable of the RF precoder, an efficient RF precoding scheme based on the normalised matrix adaptive method (NMAM) is proposed. Numerical simulations show that the NMAM achieves excellent performance approaching that of fully digital precoding, with relatively low computational complexity.
ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2017.0071