Efficient Blind Receiver Design for Orthogonal Space-Time Block Codes
- Creators
- Cui, Tao
- Tellambura, Chintha
Abstract
We consider stochastic blind maximum-likelihood detection of orthogonal space-time block codes (OSTBCs) over a quasi-static flat multiple-input multiple-output (MIMO) Rayleigh fading channel. A general decision rule for stochastic blind maximum-likelihood OSTBC detection is derived. This rule is simplified using OSTBC linear dispersion matrices to realize a blind detector, which is implemented by semi-definite relaxation or sphere decoding. For the latter, the modifications necessary for both unitary and non-unitary constellations are developed. Two totally blind detectors using dual constellations or a superimposed training scheme are proposed. As a side product, two conditions for a rotatable OSTBC are also derived. A decision-directed, minimum mean-square-error (MMSE) channel estimator is developed. We also derive the Cramer-Rao bound (CRB) for channel estimation and discuss the optimal power allocation. Extensive simulation results are used to compare the different detectors in terms of complexity and performance.
Additional Information
© Copyright 2007 IEEE. Reprinted with permission. Manuscript received September 8, 2005; revised April 20, 2006, November 2, 2006, and November 21, 2006; accepted November 22, 2006. [Posted online: 2007-05-21] The associate editor coordinating the review of this paper and approving it for publication was G. Leus. This work has been supported in part by the Natural Sciences and Engineering Research Council of Canada, Informatics Circle of Research Excellence and Alberta Ingenuity Fund. This paper has been presented in part at IEEE Wireless Communications and Networking Conference, April 2006, Las Vegas, NV USA. The authors would like to thank the anonymous reviewers and the associate editor for their critical comments that greatly improved this paper.Files
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Additional details
- Eprint ID
- 8386
- Resolver ID
- CaltechAUTHORS:CUIieeetwc07a
- Created
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2007-08-02Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field