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Time-Varying FIR Equalization for MIMO Transmission Over Doubly Selective Channels

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Executive Summary

In this paper, the authors propose time-varying FIR equalization techniques for Multiple-Input Multiple-Output (MIMO) transmission over doubly selective channels. The doubly selective channel is modeled using the Basis Expansion Model (BEM), and equalized by means of time-varying FIR filters. The time-varying FIR filters are also modeled using the BEM. By doing this, the time-varying deconvolution problem is converted into a two-dimensional time-invariant deconvolution problem in the time-invariant coefficients of the channel BEM and the time-invariant coefficients of the equalizer BEM.

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