Title :
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
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;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9335-X
DOI :
10.1109/WCNM.2005.1544010
