{"title":"Turbo MIMO equalization and decoding in fast fading mobile coded OFDM","authors":"D.N. Liu, M. Fitz","doi":"10.1109/ALLERTON.2008.4797664","DOIUrl":null,"url":null,"abstract":"Data detection of coded multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (OFDM) in fast time-varying channels are considered. Maintaining high performance with manageable complexity relies on iterative soft-in soft-out equalization and decoding. This paper derives the optimum front-end demodulation structure by extending Ungerboeck equalizer formulation to a MIMO intercarrier interference (ICI) channel. Utilizing the fact that ICI energy is clustered in adjacent subcarriers, frequency domain equalization is made localized. This paper further proposes a computational efficient linear minimum mean square error (LMMSE) based equalization method: recursive sliding-window (SW) SIC-LMMSE equalizer. Simulation results are reported for the iterative receivers with application to the mobile worldwide interoperability for microwave access (WiMAX).","PeriodicalId":120561,"journal":{"name":"2008 46th Annual Allerton Conference on Communication, Control, and Computing","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 46th Annual Allerton Conference on Communication, Control, and Computing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ALLERTON.2008.4797664","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
Data detection of coded multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (OFDM) in fast time-varying channels are considered. Maintaining high performance with manageable complexity relies on iterative soft-in soft-out equalization and decoding. This paper derives the optimum front-end demodulation structure by extending Ungerboeck equalizer formulation to a MIMO intercarrier interference (ICI) channel. Utilizing the fact that ICI energy is clustered in adjacent subcarriers, frequency domain equalization is made localized. This paper further proposes a computational efficient linear minimum mean square error (LMMSE) based equalization method: recursive sliding-window (SW) SIC-LMMSE equalizer. Simulation results are reported for the iterative receivers with application to the mobile worldwide interoperability for microwave access (WiMAX).
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