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http://dx.doi.org/10.5515/KJKIEES.2010.21.6.635

The Effects of Time Domain Windowing and Detection Ordering on Successive Interference Cancellation in OFDM Systems over Doubly Selective Channels  

Lim, Dong-Min (Department of Electronic Engineering, Gyeongsang National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.6, 2010 , pp. 635-641 More about this Journal
Abstract
Time-varying channel characteristics in OFDM systems over doubly selective channels cause inter-carrier interferences(ICI) in the frequency domain. Time domain windowing gives rise to restriction on the bandwidth of the frequency domain channel matrix and makes it possible to approximate the OFDM system as a simplified linear input-output model. When successive interference cancellation based on linear MMSE estimation is employed for channel equalization in OFDM systems, symbol detection ordering produces considerable effects on overall system performances. In this paper, we show the reduction of the residual ICI by time domain windowing and the resultant performance improvements, and investigate the effects of SINR- and CSEP-based symbol detection ordering on the performance of successive interference cancellation.
Keywords
Time Domain Windowing; Detection Ordering; Successive Interference Cancellation; Doubly Selective Channel; OFDM;
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Times Cited By KSCI : 1  (Citation Analysis)
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