Extension of 4-Tx Precoding Codebook to 8-Tx Downlink Closed-Loop MIMO

Author

Zhang, Yongliang ; Chang, Yongyu ; Wang, Sen ; Yang, Dacheng

Author_Institution

Wireless Theor. & Technol. Lab. (WT&T), Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2011

Firstpage

1

Lastpage

4

Abstract

The codebook based precoding is an effective form of limited feedback closed-loop multiple input multiple output (MIMO) scheme. An efficient methodology to build low complexity and high performance codebook is crucial for the closed-loop MIMO precoding algorithm. In this paper, we present a simplified codebook design scheme for 8-Tx MIMO based on the 4-Tx codebook in LTE Rel-8 and Kronecker product. In additional to low complexity and good backward compatibility properties, the codebook design based on this method can inherit most of the desired properties of Rel-8 codebook.

Keywords

Long Term Evolution; MIMO communication; precoding; 4-Tx precoding codebook; 8-Tx downlink closed-loop MIMO scheme; Kronecker product; LTE Rel-8 product; backward compatibility property; closed-loop MIMO precoding algorithm; limited feedback closed-loop MIMO scheme; limited feedback closed-loop multiple input multiple output scheme; Covariance matrix; MIMO; Radio access networks; Receiving antennas; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on

Conference_Location

Wuhan

ISSN

2161-9646

Print_ISBN

978-1-4244-6250-6

Type

conf

DOI

10.1109/wicom.2011.6040072

Filename

6040072