Synchronization-assisted adaptive MMSE channel estimation algorithm for MB OFDM UWB system

Author

Li, Sai ; Zou, Weixia ; Liu, Wei ; Shen, Bin ; Kwak, Kyung Sup

Author_Institution

Key Lab. of Universal Wireless Commun., Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

28-30 Sept. 2009

Firstpage

470

Lastpage

473

Abstract

In this paper, an adaptive MMSE channel estimation method is proposed for UWB-OFDM system. As we known, the MMSE algorithm is dependent on the auto-correlation of the known signals and the cross-correlation between the known signals and the signals to be estimated. These parameters are difficult to obtain in practice, because it needs a long-term statistic at the cost of huge complexity and time delay. In this paper, a synchronization-assisted adaptive MMSE algorithm is proposed for OFDM UWB channel estimation.

Keywords

OFDM modulation; adaptive estimation; channel estimation; correlation methods; least mean squares methods; synchronisation; time-domain analysis; ultra wideband communication; wireless channels; MB UWB-OFDM system; TD-LS channel estimation; computational complexity; long-term statistic; parameter estimation; signal autocorrelation; signal cross-correlation; synchronization-assisted adaptive MMSE channel estimation algorithm; time delay; Autocorrelation; Channel estimation; Delay effects; Delay estimation; Electronic mail; Frequency synchronization; OFDM; Signal to noise ratio; Statistics; Telecommunications; OFDM; TD-LS; UWB; adaptive MMSE;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on

Conference_Location

Icheon

Print_ISBN

978-1-4244-4521-9

Electronic_ISBN

978-1-4244-4522-6

Type

conf

DOI

10.1109/ISCIT.2009.5341204

Filename

5341204