A comparative study of blind channel identification methods for Alamouti coded systems over indoor transmissions at 2.4 GHz

This paper focuses on blind channel estimation in Alamouti coded systems with one receiving antenna. We present a comparative study of several blind channel estimation techniques, based on high order statistics (HOS) and second order statistics (SOS), in realistic indoor scenarios. These methods are...

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Published in2008 5th IEEE Sensor Array and Multichannel Signal Processing Workshop pp. 1 - 4
Main Authors Garcia-Naya, J.A., Perez-Iglesias, H.J., Dapena, A., Castedo, L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2008
Subjects
Blind equalizers
Channel estimation
Matrix decomposition
MIMO
Receivers
Signal to noise ratio
Transmitters
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Summary:This paper focuses on blind channel estimation in Alamouti coded systems with one receiving antenna. We present a comparative study of several blind channel estimation techniques, based on high order statistics (HOS) and second order statistics (SOS), in realistic indoor scenarios. These methods are based on eigendecomposition of a square matrix formed with statistics of the observed signals. They also exploit the orthogonality property of the Alamouti coded channel matrix. Experimental evaluation is carried out using a MIMO testbed at the 2.4 GHz band. The results show the excellent performance of the SOS-based blind channel estimation technique in either line of sight (LOS) and Non-LOS (NLOS) indoor scenarios.
ISBN:142442240X
9781424422401
ISSN:1551-2282
2151-870X
DOI:10.1109/SAM.2008.4606811