Hybrid precoding design for millimetre wave systems with the partially-connected structure

Millimetre wave (mmWave) communication is a promising technique for fifth generation networks. Hybrid precoding is introduced to mmWave communication systems to provide a reasonable trade-off strategy between system performance and energy cost. The hybrid precoder with the partially-connected struct...

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Veröffentlicht in:IET communications Jg. 14; H. 4; S. 561 - 567
Hauptverfasser: Wang, Ye, Zou, Weixia
Format: Journal Article
Sprache:Englisch
Veröffentlicht: The Institution of Engineering and Technology 03.03.2020
Schlagworte:
5G mobile communication
analogue precoding matrix
channel estimation
channel estimation error
channel matrix
digital precoder
energy consumption
energy cost
fifth generation networks
heuristic method
hybrid precoder
hybrid precoding design
low hardware complexity
matrix algebra
millimetre wave communication
millimetre wave systems
mmWave communication systems
numerical simulations
optimisation
optimisation problem
partially‐connected structure
phase shifters
precoding
Research Article
system performance
hybrid precoding design
numerical simulations
low hardware complexity
5G mobile communication
digital precoder
fifth generation networks
channel matrix
millimetre wave communication
precoding
heuristic method
channel estimation error
partially-connected structure
matrix algebra
optimisation problem
phase shifters
optimisation
channel estimation
mmWave communication systems
hybrid precoder
system performance
energy cost
energy consumption
millimetre wave systems
analogue precoding matrix
ISSN:1751-8628, 1751-8636
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Beschreibung
Zusammenfassung:Millimetre wave (mmWave) communication is a promising technique for fifth generation networks. Hybrid precoding is introduced to mmWave communication systems to provide a reasonable trade-off strategy between system performance and energy cost. The hybrid precoder with the partially-connected structure has relatively low hardware complexity and less energy consumption. In this study, the authors decompose the optimisation problem of analogue precoder into several subproblems, and introduce a heuristic method to find the solution. Then, they obtain the digital precoder according to the product of the channel matrix and analogue precoding matrix. Numerical simulations show that the proposed algorithm performs well in most cases. Considering the error of channel estimation or the finite resolution of phase shifters, the proposed algorithm is able to provide acceptable spectral efficiency as well.
ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2019.0188