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This paper addresses the problem of data detection in cooperative space-time block coded (STBC) orthogonal frequency division multiplexing (OFDM) systems in the presence of multiple carrier frequency offsets (CFO). An enhanced iterative maximum-likelihood detector (EIMLD) is proposed. This method consists of first removing inter-carrier interference (ICI), and then performing iterative symbol detection and inter-symbol interference reduction. Simulation results show that EIMLD significantly outperforms existing iterative methods. Comparisons with the zero-forcing and minimum-mean square error detectors, which require complex matrix inversion, are also carried out.
Published in:
Signal Processing Letters, IEEE
(Volume:16
,
Issue:
7
)
Date of Publication: July 2009
- Page(s):
- 600 - 603
- ISSN :
- 1070-9908
- INSPEC Accession Number:
- 10661658
- Digital Object Identifier :
- 10.1109/LSP.2009.2018332
- Product Type:
- Journals & Magazines
- Date of Publication :
- 21 March 2009
- Date of Current Version :
- 12 May 2009
- Issue Date :
- July 2009
- Sponsored by :
- IEEE Signal Processing Society
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