Optimal training for MIMO time-selective fading channels

Author

Zhu, Jiangzhang ; Wen, Shuangchun ; Wen, Hong

Author_Institution

Sch. of Comput. & Commun., Hunan Univ., Changsha, China

Volume

1

fYear

2005

fDate

23-26 Sept. 2005

Firstpage

143

Lastpage

146

Abstract

Carrier frequency offsets and mobility induced Doppler shifts introduce time-selective in wireless links. To mitigate the resulting time-selective, in this paper, optimal training sequence was designed for linear minimum mean square error (LMMSE) estimation of multi-input multi-output time-selective channels by maximizing a lower bound on the average capacity while at the same time minimizing the mean-square channel estimation error. Optimal number and placement of pilot symbols are also analyzed. Numerical analysis and simulation corroborate our theoretical designs.

Keywords

MIMO systems; channel estimation; fading channels; least mean squares methods; mobile radio; radio links; wireless channels; Doppler shifts; LMMSE; MIMO time-selective fading channels; linear minimum mean square error; mean-square channel estimation error; multiinput multioutput channels; optimal training sequence; wireless links; Analytical models; Channel estimation; Doppler shift; Estimation error; Fading; Frequency; MIMO; Mean square error methods; Numerical analysis; Numerical simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on

Print_ISBN

0-7803-9335-X

Type

conf

DOI

10.1109/WCNM.2005.1544003

Filename

1544003