Title :
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
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;
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
DOI :
10.1109/ISCIT.2009.5341204
