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MMSE precoder for unitary space-time codes in correlated time-varying channels

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2 Author(s)
Nguyen, V.K. ; Sch. of Eng. & Technol., Deakin Univ., Geelong, Vic., Australia ; Yong Xiang

This letter addresses the problem of the design of a precoder for multiple transmit antenna communication systems with spatially and temporally correlated fading channels. By using the asymptotic (high signal-to-noise ratio) mean-square error of the channel estimates, the letter derives a precoder for unitary space-time codes that can exploit the spatiotemporal correlation in the time-varying fading channels. Simulation results illustrate that significant performance gains can be achieved by using the new precoder.

Published in:

Signal Processing Letters, IEEE  (Volume:12 ,  Issue: 8 )