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A low-complexity semi-blind joint channel estimation and data detection scheme is proposed for space-time shift keying (STSK) based multiple-input multiple-output systems. The minimum number of STSK training blocks, which is related to the number of transmitter antennas, is first utilized to provide a rough initial least square channel estimate (LSCE). Then low-complexity single-stream maximum likelihood (ML) data detection is carried out based on the initial LSCE and the detected data are employed to refine the decision-directed LSCE. It is demonstrated that a few iterations are sufficient to approach the optimal ML detection performance obtained with the perfect channel state information.
Published in:
Signal Processing Letters, IEEE
(Volume:17
,
Issue:
12
)
Date of Publication: Dec. 2010
- Page(s):
- 993 - 996
- ISSN :
- 1070-9908
- INSPEC Accession Number:
- 11597438
- Digital Object Identifier :
- 10.1109/LSP.2010.2083654
- Product Type:
- Journals & Magazines
- Date of Publication :
- 04 October 2010
- Date of Current Version :
- 25 October 2010
- Issue Date :
- Dec. 2010
- Sponsored by :
- IEEE Signal Processing Society
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