A channel estimation method for MIMO-OFDM Mobile WiMax systems

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Author
Delestre, F.
Sun, Y.
Abstract
In this paper, channel estimation for Space-Time Block Code (STBC) - Orthogonal Frequency Division Multiplexing (OFDM) is investigated for Mobile WiMax systems. A new channel estimation approach is proposed using the dedicated pilot subcarriers defined at constant intervals by the WiMax standard. The estimation method has low computation as only linear operations are needed due to orthogonal pilot coding. The performances of the proposed method have been demonstrated by extensive computer simulations. For the OFDM system with two transmit antennas and one to four receive antennas and using QPSK modulation, the simulated results under different Stanford University Interim (SUI) channels show that the proposed method has only a 4dB loss compared to the ideal case where the channel is known at the receiver.
Publication date
2010
Published in
Proceedings of the 2010 7th International Symposium on Wireless Communication Systems ISWCS'10 Art. No. 5624328
Published version
https://doi.org/10.1109/ISWCS.2010.5624328
Other links
http://hdl.handle.net/2299/5230
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