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

Authors:
Sai Li;Weixia Zou;Wei Liu;Bin Shen;Kyung Sup Kwak
Affiliations:
Key Lab of Universal Wireless Communications, MOE, Wireless Network Laboratory, Beijing University of Posts and Telecommunications, Beijing, China;Key Lab of Universal Wireless Communications, MOE, Wireless Network Laboratory, Beijing University of Posts and Telecommunications, Beijing, China;Department of Service Technology, China Mobile Research Institute, Xuanwu District, Beijing, China;Telecom. Engineering Lab, Graduate School of IT and Telecom., Inha University, Incheon, Korea;UWB, ITRC, Inha University, Incheon, Korea
Venue:
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Year:
2009

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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 autocorrelation 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.