Title :
The Study of Pilot Allocation and Channel Estimation in Downlink OFDMA Systems
Author :
Xing, Hongnian ; Renfors, Markku
Author_Institution :
Nokia, Espoo
Abstract :
The OFDMA technology has been proposed as one of the main downlink schemes for the B3G systems. In this paper, the characteristics of a Wiener filter based channel estimation scheme have been investigated for the downlink OFDMA system. The basic pilot patterns have also been studied for the proposed channel estimator. In general, it has been shown that with proper pilot density, a 2D Wiener filter can provide good performance in different channel conditions. So such a channel estimator can be proposed as one of the suitable channel estimation schemes for the downlink OFDMA system.
Keywords :
3G mobile communication; OFDM modulation; Wiener filters; channel allocation; channel estimation; frequency division multiple access; Wiener filter; channel estimation; downlink OFDMA systems; pilot allocation; Channel estimation; Downlink; Fading; Frequency domain analysis; Frequency estimation; Interference; Modems; OFDM; Sampling methods; Wiener filter;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394646
