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Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach

Abstract: 

The problem of network multiple-input multiple-output precoding under distributed channel state information is a notoriously challenging question, for which optimal solutions with reasonable complexity remain elusive. In this context, we assess the value of hierarchical information exchange, whereby an order is established among the transmitters (TXs) in such a way that~a given TX has access not only to its local channel estimate but also to the estimates available at the less informed TXs. Assuming regularized zero forcing (RZF) precoding at the TXs, we propose naive, locally robust, and globally robust suboptimal strategies for the joint precoding design. Numerical results show that hierarchical information exchange brings significant performance gains, with the locally and globally robust algorithms performing remarkably close to the optimal RZF strategy. Lastly, the cost of hierarchical information exchange relative to the cooperation gain is examined and the optimal tradeoff is numerically evaluated.

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Paper Details

Authors:
Italo Atzeni, David Gesbert
Submitted On:
26 June 2018 - 5:49am
Short Link:
Type:
Poster
Event:
Presenter's Name:
Italo Atzeni
Paper Code:
1570437044
Document Year:
2018
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Document Files

18_06_28_SPAWC.pdf

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[1] Italo Atzeni, David Gesbert, "Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3332. Accessed: Jul. 17, 2018.
@article{3332-18,
url = {http://sigport.org/3332},
author = {Italo Atzeni; David Gesbert },
publisher = {IEEE SigPort},
title = {Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach},
year = {2018} }
TY - EJOUR
T1 - Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach
AU - Italo Atzeni; David Gesbert
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3332
ER -
Italo Atzeni, David Gesbert. (2018). Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach. IEEE SigPort. http://sigport.org/3332
Italo Atzeni, David Gesbert, 2018. Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach. Available at: http://sigport.org/3332.
Italo Atzeni, David Gesbert. (2018). "Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach." Web.
1. Italo Atzeni, David Gesbert. Cooperative MIMO Precoding with Distributed CSI: A Hierarchical Approach [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3332