DocumentCode :
2113869
Title :
Deployment issues for massive MIMO systems
Author :
Neil, Callum T. ; Shafi, Mansoor ; Smith, Peter J. ; Dmochowski, Pawel A.
Author_Institution :
School of Engineering and Computer Science, Victoria University of Wellington, New Zealand
fYear :
2015
fDate :
8-12 June 2015
Firstpage :
1298
Lastpage :
1303
Abstract :
In this paper we examine a number of deployment issues which arise from practical considerations in massive multiple-input-multiple-output (MIMO) systems. We show both spatial correlation and line-of-sight (LOS) introduce an interference component to the system which causes non-orthogonality between user channels. Distributing the antennas into multiple clusters is shown to reduce spatial correlation and improve performance. Furthermore, due to its ability to minimize interference, zero forcing (ZF) precoding performs well in massive MIMO systems compared to matched filter (MF) precoding which suffers large penalties. However, the noise component in the ZF signal-to-noise-ratio (SNR) increases significantly in the case of imperfect transmit channel state information (CSI).
Keywords :
Antenna arrays; Arrays; Correlation; MIMO; Signal to noise ratio; Topology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communication Workshop (ICCW), 2015 IEEE International Conference on
Conference_Location :
London, United Kingdom
Type :
conf
DOI :
10.1109/ICCW.2015.7247357
Filename :
7247357
Link To Document :
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