DocumentCode :
1634750
Title :
Improved Frequency-Domain Channel Estimation for Fast Time-Varying MIMO-SCFDE Channels
Author :
Zheng, Yahong Rosa ; Zhang, Jian
Author_Institution :
Dept. of Electr. & Comput. Eng., Missouri Univ. of Sci. & Technol., Rolla, MO
fYear :
2008
Firstpage :
5108
Lastpage :
5112
Abstract :
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.
Keywords :
Doppler shift; MIMO communication; channel estimation; correlation methods; equalisers; error statistics; frequency response; frequency-domain analysis; interpolation; least mean squares methods; time-varying channels; Doppler scenarios; bit error rate performances; channel frequency responses; channel temporal-spatial correlation; fast time-varying MIMO-SCFDE channels; frequency-domain channel estimation; frequency-domain interpolation; minimum mean squared error estimation; multiple-input multiple output system; single-carrier frequency-domain equalization; Bit error rate; Channel estimation; Computational complexity; Frequency estimation; Interpolation; Least squares approximation; MIMO; OFDM; Resonance light scattering; Time domain analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
Type :
conf
DOI :
10.1109/ICC.2008.959
Filename :
4533995
Link To Document :
بازگشت