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For the Vertical Bell Laboratories Layered Space-Time systems, the optimum a posteriori probability detector encounters the problem of calculating Gaussian mixtures with large numbers of components. In this letter, a new detector is proposed, which consists of an minimum-mean-square-error generalized decision feedback equalization-based dominant symbol combinations selection algorithm for mixture components reduction, and a Cholesky factorization-based efficient algorithm for likelihood function calculation. The new detector can obtain near optimum performance with a complexity much lower than that of a previous sequential algorithm with Gaussian approximation.
Published in:
Signal Processing Letters, IEEE
(Volume:14
,
Issue:
9
)
Date of Publication: Sept. 2007
- Page(s):
- 593 - 596
- ISSN :
- 1070-9908
- INSPEC Accession Number:
- 9617801
- Digital Object Identifier :
- 10.1109/LSP.2007.896153
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 13 August 2007
- Issue Date :
- Sept. 2007
- Sponsored by :
- IEEE Signal Processing Society
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