NDLI: Zero-padded complex conjugate technique for intercarrier interference cancellation in MIMO-OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Yiwleak, A. Pirak, C.
Copyright Year	2010
Description	Author affiliation: Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok, Thailand (Yiwleak, A.; Pirak, C.)
Abstract	This paper proposes a zero-padded conjugate cancellation technique in orthogonal frequency division multiplexing (OFDM) systems by padding zero between two consecutive symbols in order to effectively mitigate intercarrier interference (ICI) caused by a frequency offset in MIMO systems. The channels of the proposed system are not limited to the real-value channels as required in Alamouti-coded MIMO systems combined with ICI cancellation technique. The proposed system offers advantages of a conjugate cancellation scheme and MIMO systems such as backward compatibility with the MIMO-OFDM system, low receiver complexity, and offering a diversity of four. Simulation results show that the proposed scheme achieves a lower bit error rate (BER) compared with the ordinary zero-padded MIMO-OFDM systems in both AWGN (when frequency offset = 1–20%) and Rayleigh fading channels (when frequency offset = 1–10%), and outperforms the repetition-coded conjugate cancellation in SISO-OFDM systems when the frequency offset is not greater than 10% of subcarrier frequency spacing.
Starting Page	901
Ending Page	906
File Size	132052
Page Count	6
File Format	PDF
ISBN	9781424470075
e-ISBN	9781424470105
e-ISBN	9781424470099
DOI	10.1109/ISCIT.2010.5665115
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-26
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading OFDM Bit error rate Receivers MIMO Frequency division multiplexing Frequency domain analysis
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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