Interference estimation for multi-layer MU-MIMO transmission in LTE-Advanced systems

Author

Bai, Zijian ; Badic, Biljana ; Iwelski, Stanislaus ; Balraj, Rajarajan ; Scholand, Tobias ; Bruck, Guido ; Jung, Peter

Author_Institution

Univ. of Duisburg-Essen, Duisburg, Germany

fYear

2012

fDate

9-12 Sept. 2012

Firstpage

1622

Lastpage

1626

Abstract

The aim of this paper is to get an insight of the interference estimation for multi-layer multi-user multiple-input and multiple-output (ML-MU-MIMO) transmission for LTE-Advanced (long term evolution) systems. Different interference-aware receivers have been investigated in ML-MU-MIMO with the presence of co-layer, intra-cell and inter-cell interferences. User-specific reference signal (UE-RS) based channel estimation and various interference covariance estimation schemes in LTE-Advanced systems are investigated together analytically and numerically. Our investigation has shown the significant influence of the interference estimation schemes on the system performance at the link level. Furthermore, the simulation results have shown the advanced MMSE receiver together with UE-RS based interference estimation as the most robust receiver structure for the signal detection in ML-MU-MIMO transmission.

Keywords

Long Term Evolution; MIMO communication; channel estimation; least mean squares methods; radio links; radio receivers; radiofrequency interference; signal detection; LTE-advanced systems; MMSE receiver; UE-RS based channel estimation; colayer interference; intercell interferences; interference covariance estimation schemes; interference estimation; interference-aware receivers; intracell interferences; long term evolution system; multilayer MU-MIMO transmission; multiuser multiple-input and multiple-output transmission; signal detection; user-specific reference signal; Channel estimation; Covariance matrix; Estimation; Interference; MIMO; Receivers; Throughput; Covariance Matrix Estimation; Interference Whitening; LTE-Advanced; Multi-Layer MU-MIMO;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on

Conference_Location

Sydney, NSW

ISSN

2166-9570

Print_ISBN

978-1-4673-2566-0

Electronic_ISBN

2166-9570

Type

conf

DOI

10.1109/PIMRC.2012.6362608

Filename

6362608