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Joint frequency selective channel estimation and turbo decoding in space time systems

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2 Author(s)
Ronen, S. ; Electr. Eng. Dept., Arizona State Univ., Tempe, AZ ; Duman, T.M.

A non-coherent multiple input multiple output (MIMO) coded communication system over a frequency selective (FS) block fading channel is considered. A theoretical limit for the channel estimation error is established via a closed form derivation of the modified Cramer-Rao bound (MCRB) (more precisely, a tight lower bound to it) for the underlying channel model and equi-power signal constellations. Furthermore, it is shown that, for a practical coded MIMO system that employs turbo coding and an appropriate iterative decoding, the resulting mean squared error (MSE) in channel estimation approaches very closely to the derived theoretical limit.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:7 ,  Issue: 12 )

Date of Publication:

December 2008

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