Title :
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
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;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6040072
