A frequency-domain channel estimation method is proposed for time-varying multiple-input multiple output (MIMO) single-carrier frequency-domain equalization (SC-FDE). The proposed method uses frequency-domain interpolation to obtain channel frequency responses of data blocks from estimated responses of two adjacent pilot blocks. It takes the channel temporal-spatial correlation into account to achieve minimum mean squared error (MMSE) estimation, thus improving the accuracy and effectiveness in high Doppler scenarios. The simulation results of the bit error rate (BER) performances show that the proposed method works well for fast time-varying channels with Doppler spread as high as 300 Hz while maintaining over 70% data efficiency.
Y. R. Zheng and J. Zhang, "Improved Frequency-Domain Channel Estimation for Fast Time-Varying MIMO-SCFDE Channels," Proceedings of the IEEE International Conference on Communications, 2008. ICC'08, Institute of Electrical and Electronics Engineers (IEEE), May 2008.
The definitive version is available at http://dx.doi.org/10.1109/ICC.2008.959
IEEE International Conference on Communications, 2008. ICC'08
Electrical and Computer Engineering
United States. Office of Naval Research
University of Missouri Research Board
Keywords and Phrases
Doppler Shift; MIMO Communication; Channel Estimation; Correlation Methods; Equalisers; Error Statistics; Frequency Response; Frequency-Domain Analysis; Interpolation; Least Mean Squares Methods; Time-Varying Channels
Article - Conference proceedings
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