Title
Covariance estimation with projected data: Applications to CSI covariance acquisition and tracking.
Abstract
We consider the problem of covariance estimation with projected or missing data, and in particular the application to spatial channel covariance estimation in a multi-user Massive MIMO wireless communication system with arbitrary (possibly time-varying and/or non-orthogonal) pilot sequences. We introduce batch and online estimators based on the expectation-maximization (EM) approach, and provide sufficient conditions for their asymptotic (for large sample sizes) unbiasedness. We analyze their application to both uplink and downlink Massive MIMO, and provide numerical performance benchmarks.
Year
Venue
Field
2017
European Signal Processing Conference
Signal processing,Mathematical optimization,Estimation of covariance matrices,Communication channel,MIMO,Missing data,Mathematics,Covariance,Estimator,Telecommunications link
DocType
ISSN
Citations 
Conference
2076-1465
1
PageRank 
References 
Authors
0.35
10
2
Name
Order
Citations
PageRank
Alexis Decurninge1317.78
Maxime Guillaud231530.64