On Alamouti scheme performance in spatially correlated fading and pilot assisted channel prediction

Authors:
Khaled Almustafa;Serguei Primak;Tricia J. Willink
Affiliations:
Dept. of Elec. Comp. Eng., UWO, London, Ontario, Canada;Dept. of Elec. Comp. Eng., UWO, London, Ontario, Canada;CRC Canada, Ottawa, Canada
Venue:
MOAS'07 Proceedings of the 18th conference on Proceedings of the 18th IASTED International Conference: modelling and simulation
Year:
2007

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Abstract

In this paper, the performance of the Alamouti space-time code in time-varying spatially and time correlated Rayleigh fading channels with imperfect channel estimates is considered. Estimating filters are used to improve the accuracy of channel knowledge during the reception of data symbols between the pilot sequences of adjacent frames. The effects of different parameters of the estimating filter, such as filter length, filter type, causality, etc. and antenna geometry on the bit rate are presented. It is found that the use of estimation filters can improve the performance even for correlated channels, particularly using the Wiener filter.