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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Vydáno v:	IET communications Ročník 11; číslo 12; s. 1882 - 1885
Hlavní autoři:	Feng, Yongpan, Kim, Suk Chan
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	The Institution of Engineering and Technology 24.08.2017
Témata:	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