Title :
An efficient channel estimation method for OFDM systems with multiple transmit antennas
Author :
Zhao, Yahong ; Li, Weihua ; Wu, Weiling
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
Abstract :
For the sake of bandwidth efficiency, one preamble pilot OFDM symbol is preferable for channel estimation of an OFDM system with two transmit antennas; a transform-domain processing method of channel estimation is proposed in this paper, which is equivalent to interpolation in the frequency domain. And a simple time-domain noise-suppression method is utilized to improve the accuracy of the channel estimation. Theoretic analysis and simulation results validate the accuracy of the channel estimation method proposed in this paper
Keywords :
OFDM modulation; antenna arrays; antenna theory; estimation theory; interference suppression; multipath channels; radio networks; radiofrequency interference; transmitting antennas; OFDM systems; bandwidth efficiency; efficient channel estimation method; multiple transmit antennas; time-domain noise-suppression method; transform-domain processing method; wireless communication; Bandwidth; Channel estimation; Fading; Frequency domain analysis; Interpolation; OFDM; Rayleigh channels; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7010-4
DOI :
10.1109/ICII.2001.983600
