Hierarchy precoder design for multi-cell multiuser multiple-input–multiple-output wireless networks with interference alignment

A hierarchy precoding approach is proposed in this study for multi-cell multiuser systems with any number of base stations and that of users, which is suitable for any number of data streams. The key feature of this approach is aligning the inter-user interferences within the same cell to the room s...

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Vydáno v:IET signal processing Ročník 10; číslo 3; s. 218 - 226
Hlavní autoři: Li, Shidang, Li, Fei, Li, Chunguo, Huang, Yongming, Zhu, Weiping, Yang, Luxi
Médium: Journal Article
Jazyk:angličtina
Vydáno: The Institution of Engineering and Technology 01.05.2016
Témata:
Alignment
cellular radio
Design engineering
Error analysis
Exact solutions
Hierarchies
hierarchy precoder design
Interference
interference alignment‐based hierarchy precoder
Mathematical analysis
MIMO communication
multi‐cell multiuser multiple‐input‐multiple‐output wireless networks
precoding
radiofrequency interference
Simulation
Special Section: Signal Processing for Large Scale 5G Wireless Networks
sum weighted mean square error
radiofrequency interference
multi-cell multiuser multiple-input-multiple-output wireless networks
sum weighted mean square error
precoding
hierarchy precoder design
interference alignment-based hierarchy precoder
MIMO communication
cellular radio
ISSN:1751-9675, 1751-9683, 1751-9683
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Popis
Shrnutí:A hierarchy precoding approach is proposed in this study for multi-cell multiuser systems with any number of base stations and that of users, which is suitable for any number of data streams. The key feature of this approach is aligning the inter-user interferences within the same cell to the room spanned by the inter-cell interferences, by which both the inter-cell and inter-user interferences are cancelled simultaneously. Then, the inter-stream interference for each user can be easily tackled. It is found that the interference alignment-based hierarchy precoder achieves to the full freedom of degree. With interference-free transmissions achieved by the proposed precoder, the transmit power is optimised in an analytical expression by maximising the sum rate and minimising the sum weighted mean square error. Extensive simulations demonstrate the effectiveness of the proposed method.
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ISSN:1751-9675
1751-9683
1751-9683
DOI:10.1049/iet-spr.2015.0223