On Implementing Spatial-Correlation-Information Aided Feedback in Practical MIMO Systems

Author

Chen, Jinhui ; Li, Dong ; Yang, Hongwei ; Liu, Hao ; Lu, Di ; Wu, Lu

Author_Institution

Res. & Innovation Center, Alcatel-Lucent Shanghai Bell, Shanghai, China

fYear

2011

fDate

5-8 Sept. 2011

Firstpage

1

Lastpage

5

Abstract

This work investigates implementing spatial-correlation-information aided feedback in practical multiple-input multiple-output (MIMO) systems. It is presented that the existing spatial-correlation-information aided feedback approach could be simplified in computational complexity with little performance loss. In comparison with Grassmannian codebooks, the feedback codebooks in the 3GPP LTE Release-8 specification is shown to be a near-optimal base codebook. An efficient quantization approach is proposed for quantizing transmit spatial covariances matrices for closely-spaced co-polarized uniform linear arrays (ULA). The good performance of the entire practical feedback solution is demonstrated via system-level simulation.

Keywords

3G mobile communication; Long Term Evolution; MIMO systems; computational complexity; covariance matrices; quantisation (signal); 3GPP LTE Release-8 specification; Grassmannian codebooks; computational complexity; near-optimal base codebook; practical MIMO systems; quantization; spatial-correlation-information aided feedback; transmit spatial covariances matrices; uniform linear arrays; Correlation; Covariance matrix; MIMO; Quantization; Receiving antennas; Transforms; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2011 IEEE

Conference_Location

San Francisco, CA

ISSN

1090-3038

Print_ISBN

978-1-4244-8328-0

Type

conf

DOI

10.1109/VETECF.2011.6093026

Filename

6093026