Record link: 
http://hdl.handle.net/20.500.12708/162122
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Title: 
Low-complexity ICI/ISI equalization in doubly dispersive multicarrier systems using a decision-feedback LSQR algorithm
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Citation: 
Tauböck, G., Hampejs, M., Svac, P., Matz, G., Hlawatsch, F., & Grochenig, K. (2011). Low-complexity ICI/ISI equalization in doubly dispersive multicarrier systems using a decision-feedback LSQR algorithm. IEEE Transactions on Signal Processing, 59(5), 2432–2436. https://doi.org/10.1109/tsp.2011.2113181
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Publisher DOI: 
10.1109/tsp.2011.2113181
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Tauböck, Georg 
Hampejs, Mario 
Svac, Pavol 
Matz, Gerald 
Hlawatsch, Franz 
Grochenig, Karlheinz 
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Organisational Unit: 
E389-03 - Forschungsbereich Signal Processing 
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Journal: 
IEEE Transactions on Signal Processing 
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ISSN: 
1053-587X
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Date (published): 
May-2011
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Number of Pages: 
5
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Publisher: 
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Peer reviewed: 
Yes
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Keywords: 
Electrical and Electronic Engineering; OFDM; Signal Processing; doubly dispersive channel; interference cancelation; intersymbol/intercarrier interference; LSQR algorithm; pulse-shaping multicarrier transmission
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Abstract: 
We propose a low-complexity intercarrier interference/intersymbol interference (ICI/ISI) equalizer for multicarrier transmissions over doubly dispersive channels. Decision-feedback (or interference cancelation)is used with respect to both time and frequency. The ICI stage employs an extension of the iterative LSQR algorithm using groupwise interference cancelation with reliability-based sorting of sets of subcarriers and a band approximation of the frequency-domain channel matrix. The LSQR algorithm is attractive because of its excellent numerical properties and low complexity. Optimal pulse design is optionally considered for shaping the ICI/ISI. Simulation results demonstrate the excellent performance of the proposed ICI/ISI equalizer.
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Research Areas: 
Telecommunication: 100%
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Science Branch: 
Elektrotechnik, Elektronik
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