A comparative analysis of pilot placement schemes in frequency-selective fast fading MIMO channel

Author

Zhao, Xueyuan ; Cheng, Roger S K ; Ong, Danny C Y

Author_Institution

Hong Kong Appl. Sci. & Technol. Res. Inst., Hong Kong

fYear

2007

fDate

26-28 April 2007

Firstpage

1

Lastpage

7

Abstract

The problem of pilot placement for channel estimation in time-frequency-space lattice in MIMO- OFDM system under frequency-selective fast fading MIMO channel is addressed in this paper. Given the least square channel estimation algorithm and orthogonal pilot signal format design, four different pilot placement schemes are analyzed in a uniformed manner. The theoretical and simulated mean square errors of the schemes show that, the scheme of placing pilots on frequency-equal-spaced and time-shifted subcarriers has good performance and balanced complexity.

Keywords

MIMO communication; channel estimation; fading channels; least squares approximations; mean square error methods; frequency-equal-spaced; frequency-selective fast fading MIMO channel; least square channel estimation algorithm; orthogonal pilot signal format design; pilot placement schemes; simulated mean square errors; time-frequency-space lattice; time-shifted subcarriers; Algorithm design and analysis; Channel estimation; Fading; Frequency estimation; Lattices; Least squares approximation; MIMO; OFDM; Signal analysis; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Telecommunications Symposium, 2007. WTS 2007

Conference_Location

Pomona, CA

ISSN

1934-5070

Print_ISBN

978-1-4244-0696-8

Electronic_ISBN

1934-5070

Type

conf

DOI

10.1109/WTS.2007.4563329

Filename

4563329