Joint Timing Epoch Tracking and Channel Estimation for Alamouti Space-Time Coding in Rayleigh Fading MIMO Channels

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 6Language: englishTyp: PDF

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Dmochowski, Pawel A.; McLane, Peter J. (Department of Electrical and Computer Engineering, Queen’s University, Kingston, ON, K7L 3N6, Canada)

We analyze the performance of a joint timing epoch tracking and PSAM-based channel estimation system in a frequency-flat Rayleigh fading MIMO channel. The receiver tracks a random timing drift via a timing error detector developed for nT = 2 orthogonal space-time block coded M-PSK systems with an arbitrary number of receive antennas. The detector’s S-curve has recently been shown to be independent of the channel state, resulting in system very robust in poor channel conditions. We evaluate the receiver’s tracking capabilities in conjunction with channel estimation and study the effects of the delay inherent to PSAM interpolation systems. Symbol error rate performance for a QPSK system is presented, with the results showing negligible performance degrad.