Orthogonal space-time block coding with adaptive transmit diversity for correlated MIMO channels

Authors:
Kevin H. Lin;Zahir M. Hussain;Richard Harris
Affiliations:
Center for Advanced Technology in Telecommunications, School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria, Australia;Center for Advanced Technology in Telecommunications, School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria, Australia;Center for Advanced Technology in Telecommunications, School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria, Australia
Venue:
ICECS'03 Proceedings of the 2nd WSEAS International Conference on Electronics, Control and Signal Processing
Year:
2003

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Abstract

In this paper we introduce a technique of eigenbeamforming based on the channel correlation matrix and paired with orthogonal space-time code (O-STBC) at the transmitter side of the link. This structure combines the spatial signal paths decorrelation with the diversity gain provided by the space-time code, which results in performance improvement. The probability distributions for both bit-error-rate (BER) and symbol-error-rate (SER) are presented based on the received signal-to-noise ratio (SNR) for this system. The system has been simulated using four transmit antennas in both uncorrelated and correlated channels. Results showed that the proposed scheme provides a significant improvement in the error rate performance of spatially correlated channels.