Precoding design for interference suppression in multi-cell multi-user networks

This study focuses on the design of downlink transmission protocols in multi-cell multi-user mobile networks, where co-channel interference has been recognised as a challenging issue particularly for the users close to the boundary of cells. The key idea of this study is to jointly apply interferenc...

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Veröffentlicht in:IET communications Jg. 8; H. 9; S. 1534 - 1540
Hauptverfasser: Liu, Heng, Ding, Zhiguo, Fan, Pingzhi, Hao, Li
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Stevenage The Institution of Engineering and Technology 01.06.2014
John Wiley & Sons, Inc
Schlagworte:
Boundaries
cells boundary
cellular radio
channel capacity
channel coding
channel state information
Channels
cochannel interference
cochannel interference suppression
communication complexity
computational complexity
Design engineering
diversity gain
diversity reception
downlink transmission protocol
Gain
Interference
interference alignment
interference suppression
iterative interference leakage minimisation scheme
iterative methods
Mathematical analysis
minimisation
multicell multiuser mobile network
multiuser channels
Networks
optimisation
Optimization
precoder optimisation scheme
precoding
precoding design
protocols
reception reliability
system throughput
telecommunication network reliability
zero forcing IA precancellation
iterative methods
cells boundary
channel coding
channel capacity
channel state information
precoding
communication complexity
multiuser channels
precoding design
optimisation
reception reliability
interference alignment
system throughput
telecommunication network reliability
protocols
interference suppression
diversity reception
zero forcing IA precancellation
diversity gain
cochannel interference
multicell multiuser mobile network
cochannel interference suppression
downlink transmission protocol
precoder optimisation scheme
iterative interference leakage minimisation scheme
minimisation
cellular radio
computational complexity
ISSN:1751-8628, 1751-8636
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Beschreibung
Zusammenfassung:This study focuses on the design of downlink transmission protocols in multi-cell multi-user mobile networks, where co-channel interference has been recognised as a challenging issue particularly for the users close to the boundary of cells. The key idea of this study is to jointly apply interference alignment (IA) and pre-cancellation to the addressed scenario, where the former technique can effectively increase the overall system throughput and the latter can significantly boost the diversity gains and reception reliability. To ensure the diversity gains can be achieved with zero-forcing IA, a precoder optimisation scheme is proposed based on the well-known iterative interference leakage minimisation scheme. Both analytic and numerical results have been developed to show the capacity and diversity gains obtained by using the proposed scheme. Besides, the computational complexity of the proposed scheme and the effects of imperfect channel state information on the performance are studied as well.
Bibliographie:SourceType-Scholarly Journals-1
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ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2013.0757