Computer Science – Information Theory
Scientific paper
2008-03-04
Signal Processing, Vol. 89, No. 9, pp. 1754-1761, Sep. 2009
Computer Science
Information Theory
Minor Revisions, mainly in introduction and problem statement. Submitted to Signal Processing
Scientific paper
10.1016/j.sigpro.2009.03.010
We consider zero-forcing equalization of frequency selective MIMO channels by causal and linear time-invariant precoders in the presence of intersymbol interference. Our motivation is twofold. First, we are concerned with the optimal performance of causal precoders from a worst case point of view. Therefore we construct an optimal causal precoder, whereas contrary to other works our construction is not limited to finite or rational impulse responses. Moreover we derive a novel numerical approach to computation of the optimal perfomance index achievable by causal precoders for given channels. This quantity is important in the numerical determination of optimal precoders.
Boche Holger
Pohl Volker
Wahls Sander
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