DocumentCode :
690978
Title :
A Novel Two-Dimensional Channel Estimation Algorithm for SC-FDE Systems
Author :
Qifeng Zou ; Xuezhi Tan ; Mei Liu ; Yang Yu
Author_Institution :
Harbin Inst. of Technol. Commun. Res. Center, Harbin, China
fYear :
2013
fDate :
21-23 Sept. 2013
Firstpage :
80
Lastpage :
84
Abstract :
A novel time-frequency domain two-dimensional MMSE channel estimation (2D-MMSE) algorithm based on separation property of mobile wireless channels is proposed in this paper in order to provide the current channel state knowledge and improve the spectral efficiency in Single Carrier Frequency Domain Equalization (SC-FDE) systems over frequency-selective channels. We use the Unique Word (UW) to be the cyclic prefix and the pilot just like IEEE802.16. The UW is not need to delete in receiver, so the overhead of system is low. The 2D-MMSE estimation is simplified as an MMSE interpolation in the frequency domain cascaded by an MMSE filter in the time domain. The SVD method is adopt to reduce the complexity and keep the estimation accuracy. We also make the noise variance estimation by UW. Finally, the simulation results show that the proposed algorithm has better performance than the LS and MMSE algorithms, and the complexity of our method is lower than traditional one-dimensional MMSE.
Keywords :
WiMax; channel estimation; least mean squares methods; time-frequency analysis; IEEE 802.16; MMSE; SC-FDE systems; SVD; Unique Word; frequency-selective channels; mobile wireless channels; single carrier frequency domain equalization systems; time-frequency domain; two-dimensional channel estimation algorithm; Channel estimation; Complexity theory; Equations; Estimation; Frequency-domain analysis; Noise; Signal processing algorithms; MMSE; SVD; Single Carrier Frequency Domain Equalization (SC-FDE) system; UW; noise variance estimation; two-dimensional channel estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2013 Third International Conference on
Conference_Location :
Shenyang
Type :
conf
DOI :
10.1109/IMCCC.2013.25
Filename :
6840414
Link To Document :
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