An improved channel estimation algorithm for OFDM UWB

Author

Fan, Xiang-Ning ; Leng, Bing ; Bi Guang-guo

Author_Institution

Dept. of Radio Eng., Southeast Univ., Nanjing, China

Volume

1

fYear

2005

fDate

23-26 Sept. 2005

Firstpage

173

Lastpage

176

Abstract

Channel estimation is very important for OFDM based UWB system because of its coherent demodulation. In this paper, a new improved channel estimation method is proposed based on the characteristics of the UWB channels. Compare with the estimator using discrete Fourier-transform, the proposed algorithm can properly choose suitable length of time-domain filter by distinguishing different channel conditions. It is shown by simulation that better performance can be achieved especially for IEEE cm1 and cm2 channels.

Keywords

OFDM modulation; channel estimation; demodulation; discrete Fourier transforms; time-domain analysis; ultra wideband communication; wireless channels; IEEE channels; OFDM based UWB system; channel estimation algorithm; coherent demodulation; discrete Fourier-transform; time-domain filter; Baseband; Channel estimation; Convolutional codes; Fading; Frequency estimation; OFDM modulation; Quadrature phase shift keying; Signal processing algorithms; Time domain analysis; Ultra wideband communication;

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.2005.1544010

Filename

1544010