MAP-Based Channel Estimation for MIMO–OFDM Over Fast Rayleigh Fading Channels

Author

Kim, Jin-Goog ; Lim, Jong-Tae

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon

Volume

57

Issue

3

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

1963

Lastpage

1968

Abstract

This paper presents a channel estimation scheme for multiple-input multiple-output with orthogonal frequency-division multiplexing (MIMO-OFDM) in fast varying Rayleigh channels. To handle rapid variation of channels within a transmission block, we propose a novel maximum a posteriori probability-based channel estimation scheme using pilot symbols. With the estimate of the channel matrix for the current symbol interval, a zero-forcing (ZF) receiver is applied to detect the spatially multiplexed data. In simulation results, the effectiveness of the proposed method is shown, as compared with the polynomial and the perfect channel estimates.

Keywords

MIMO communication; OFDM modulation; Rayleigh channels; channel estimation; matrix algebra; maximum likelihood estimation; radio receivers; MIMO-OFDM system; channel estimation; channel matrix; fast Rayleigh fading channel; maximum a posteriori probability; multiple-output with orthogonal frequency-division multiplexing; pilot symbol; zero-forcing receiver; Fast varying Rayleigh channels; MAP based channel estimation; MIMO-OFDM; fast varying Rayleigh channels; maximum a posteriori probability (MAP)-based channel estimation; multiple-input multiple-output with orthogonal frequency-division multiplexing (MIMO–OFDM);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2007.907315

Filename

4357450