NDLI: A low-complexity ICI cancellation scheme in frequency domain for OFDM in time-varying multipath channels

Content Provider	IEEE Xplore Digital Library
Author	Hongmei Wang Xiang Chen Shidong Zhou Yan Yao
Copyright Year	2005
Description	Author affiliation: State Key Lab. on Microwave & Digital Commun., Tsinghua Univ., Beijing (Hongmei Wang; Xiang Chen; Shidong Zhou; Yan Yao)
Abstract	In orthogonal frequency division multiplexing (OFDM) systems, time variation of multipath channels over an OFDM block period leads to a loss of orthogonality among subcarriers, resulting in intercarrier interference (ICI). In this paper, based on the analysis of the symbol energy distribution and the ICI generation mechanism, we propose a low-complexity partial minimum mean-squared error (MMSE) with successive detection (PMMSESD) scheme in frequency domain to mitigate ICI caused by time-varying channels. Each time, the proposed method detects the symbol with the largest received signal-to-interference-plus-noise ratio (SINR) among all the undetected symbols, using an MMSE detector only considering the interference of several neighborhood subcarriers. Analysis and simulation results show that our PMMSESD method can effectively reduce the ICI with low computational complexity, it outperforms the MMSE method at relatively high $E_{b}/N_{0$ , and its performance is close to the MMSE with successive detection (MMSESD) method in the relatively low Doppler frequency region
Starting Page	1234
Ending Page	1237
File Size	752834
Page Count	4
File Format	PDF
ISBN	9783800729098
DOI	10.1109/PIMRC.2005.1651638
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-11
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency domain analysis OFDM Multipath channels Interference Time-varying channels Signal to noise ratio Detectors Performance analysis Computational modeling Analytical models ICI cancellation Time-varying multipath channels orthogonal frequency division multiplexing (OFDM) intercarrer interference (ICI)
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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