An Iterative Algorithm of Channel Estimation for MIMO-OFDM Systems Based on Discrete Cosine Transform

Author

Feng, Shaopeng ; Lv, Jingyang ; Wang, Yanwen ; Gong, Ping ; Wu, Weiling

Author_Institution

Beijing Univ. of Posts & Telecommun.

fYear

2007

fDate

21-23 March 2007

Firstpage

467

Lastpage

470

Abstract

In this paper, we present an iterative algorithm of channel estimation for MIMO-OFDM systems based on discrete cosine transform (DCT). By exploiting the properties of DCT, the proposed method mitigates the aliasing effect introduced in discrete Fourier transform (DFT)-based channel estimation method. Further more, the proposed algorithm reduces the additive white Gaussian noise (AWGN) and inter-carrier interference (ICl) significantly by iteration. Simulation results show that the proposed method provides good MSE performance.

Keywords

AWGN channels; MIMO communication; OFDM modulation; channel estimation; discrete Fourier transforms; discrete cosine transforms; intercarrier interference; iterative methods; AWGN; DCT; DFT; ICl; MIMO-OFDM systems; additive white Gaussian noise; channel estimation; discrete Fourier transform; discrete cosine transform; inter-carrier interference; iterative algorithm; AWGN; Additive white noise; Channel estimation; Discrete Fourier transforms; Discrete cosine transforms; Fading; Frequency estimation; Iterative algorithms; OFDM; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology: Small and Smart Antennas Metamaterials and Applications, 2007. IWAT '07. International Workshop on

Conference_Location

Cambridge

Print_ISBN

1-4244-1088-6

Electronic_ISBN

1-4244-1088-6

Type

conf

DOI

10.1109/IWAT.2007.370175

Filename

4227491