Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications

Downlink Performance Analysis of Distributed Antenna Systems with Linear Precoding

Authors
Chuanlei Song, Pengcheng Zhu, Jiamin Li
Corresponding Author
Chuanlei Song
Available Online November 2015.
DOI
https://doi.org/10.2991/icmmita-15.2015.148How to use a DOI?
Keywords
DAS; linear precoding; optimal precoding
Abstract

Distributed antenna system (DAS) has emerged as a promising architecture for future mobile communications. Compared with collocated antenna system (CAS), DAS has advantages in reducing transmission power and improving the cell coverage area. In this paper, the downlink performance of DAS with linear precoding is analyzed. The optimization problem of minimizing the total transmitted power while satisfying signal-to-interference-and-noise ratio (SINR) constraints is studied to optimize the beamforming for all user jointly, which can be solved by conic optimization method. However, the problem is non-convex and can not be solved efficiently. Suboptimal methods are proposed by optimizing power allocation after given the direction of precoding. In simulation, the performance of different linear precoding methods are analyzed for the downlink of DAS. Moreover, the performance of DAS and CAS are also compared with the same antenna configuration and direction of precoding. It is shown that compared with CAS, DAS achieves the same performance with much less transmission power.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
Series
Advances in Computer Science Research
Publication Date
November 2015
ISBN
978-94-6252-120-9
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmmita-15.2015.148How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Chuanlei Song
AU  - Pengcheng Zhu
AU  - Jiamin Li
PY  - 2015/11
DA  - 2015/11
TI  - Downlink Performance Analysis of Distributed Antenna Systems with Linear Precoding
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 786
EP  - 792
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.148
DO  - https://doi.org/10.2991/icmmita-15.2015.148
ID  - Song2015/11
ER  -