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Direct-conversion architectures suffer from the mismatch between the in-phase (I) and the quadrature-phase (Q) branches, commonly called I/Q imbalance. Even low I/Q imbalances imply poor performance of orthogonal frequency division multiplexing (OFDM) systems. In this paper, we propose a new algorithm that uses both training and data symbols in a decision-directed fashion to jointly estimate the channel and compensate for high receiver I/Q imbalance. Simulation results show that our method can compensate for high I/Q imbalance values and also estimate a frequency selective channel.
Published in:
Communications, IEEE Transactions on
(Volume:57
,
Issue:
5
)
Date of Publication: May 2009
- Page(s):
- 1246 - 1249
- ISSN :
- 0090-6778
- INSPEC Accession Number:
- 10664535
- Digital Object Identifier :
- 10.1109/TCOMM.2009.05.070161
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 19 May 2009
- Issue Date :
- May 2009
- Sponsored by :
- IEEE Communications Society
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