NDLI: A Low-Complexity Channel Estimator for MIMO-OFDM Systems

Content Provider	IEEE Xplore Digital Library
Author	Yin-Tsung Hwang Sheng-Chi Peng Jenn-Kaie Lain
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung (Yin-Tsung Hwang)
Abstract	In this paper, a low complexity channel estimator for MIMO OFDM systems is proposed. A frequency domain filtering scheme based on the concept of temporal windowing for noise power reduction outside the window is developed to enhance the performance of the simple least square estimator. This approach can eliminate the extra FFT/IFFT operations required in the conventional time domain scheme. A temporal Hamming window is adopted to further reduce the computing complexity of the frequency domain filtering. Simulation results indicate the proposed scheme can significantly improve both the NMSE and BER performance of the LS channel estimator. Compared with the time domain most significant tap (MST) scheme, the proposed scheme has comparable performance but requires much less computing complexity. The proposed scheme also has the advantage in hardware implementation over the MST scheme
Sponsorship	IEEE Circuits and Syst. Soc. HKUST UESTC City Univ. of Hong Kong
Starting Page	1021
Ending Page	1025
File Size	5370351
Page Count	5
File Format	PDF
ISBN	0780395840
DOI	10.1109/ICCCAS.2006.284822
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Filtering OFDM Computational modeling Noise reduction Bit error rate MIMO Frequency estimation Hardware Least squares approximation Frequency domain analysis
Content Type	Text
Resource Type	Article

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