Title :
Semi-Blind OFDM Channel Estimation using Receiver Diversity in the Presence of Virtual Carriers
Author :
Kunji, Wang ; Jianhua, Zhang ; Chaojun, Li ; Chen, Huang
Author_Institution :
Beijing Univ. of Posts & Telecommun.
Abstract :
In this paper, a semi-blind channel estimator using receiver diversity is proposed for OFDM systems in the presence of virtual carriers over a time-dispersive channel. We insert a pilot to each data block to resolve the inherent scalar ambiguity of blind identification. The computation complexity of this algorithm is also studied and reduced. By simulation, this algorithm supplies accurate estimation with small expense.
Keywords :
3G mobile communication; OFDM modulation; channel estimation; computational complexity; diversity reception; matrix algebra; mobile radio; wireless channels; computation complexity; receiver diversity; semi-blind OFDM channel estimation; time-dispersive channel; virtual carriers; Channel estimation; Chaos; Computational modeling; Digital audio broadcasting; Digital video broadcasting; Fading; OFDM; Physical layer; Receiving antennas; Robustness;
Conference_Titel :
Communications and Networking in China, 2006. ChinaCom '06. First International Conference on
Conference_Location :
Beijing
Print_ISBN :
1-4244-0463-0
Electronic_ISBN :
1-4244-0463-0
DOI :
10.1109/CHINACOM.2006.344889
