Analysis of pilot-symbol aided channel estimation for MIMO-OFDM systems

Author

Han Zhang ; Jiming Chen ; Youxi Tang ; Shaoqian Li

Author_Institution

Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, China

Volume

1

fYear

2004

Firstpage

299

Abstract

Multiple transmit and receive antennas can be used to form multiple-input multiple-output (MIMO) channels to increase the capacity by a factor of the minimum number of transmit and receive antennas. Orthogonal frequency division multiplexing (OFDM) for MIMO channels (MIMO-OFDM) can improve the performance by mitigating intersymbol interference and enhancing system capacity. The paper investigates pilot-symbol aided channel estimation (PSACE) for MIMO-OFDM systems. Two approaches are investigated: first, zero pilot patterns use all available pilot symbols simultaneously; second, a nonzero pilot pattern is allocated for each transmit antenna exclusively. The Wiener filters are derived for both approaches.

Keywords

MIMO systems; OFDM modulation; Wiener filters; channel capacity; channel estimation; fading channels; interference suppression; intersymbol interference; receiving antennas; transmitting antennas; MIMO channels; MIMO-OFDM systems; Wiener filters; fading channel; intersymbol interference; nonzero pilot patterns; orthogonal frequency division multiplexing; pilot-symbol aided channel estimation; receive antennas; system capacity; transmit antennas; zero pilot patterns; Channel estimation; Fading; Intersymbol interference; MIMO; OFDM; Receiving antennas; Sampling methods; Transmitting antennas; Wiener filter; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on

Conference_Location

Chengdu

Print_ISBN

0-7803-8647-7

Type

conf

DOI

10.1109/ICCCAS.2004.1346070

Filename

1346070