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Matrix theory plays an important role in precoding methodology for multiple input multiple output (MIMO) systems. In this paper, an improved block diagonal (BD) precoding scheme is proposed for a MIMO multicast channel with two users, where the unitary precoding matrix is constructed in a block-wise form by joint triangularization decomposition. In order to reduce large signal-to-noise ratios (SNRs)...
The frequency selectivity of wireless channels makes the multiple-input multiple-output (MIMO) precoder design significantly more complicated than its counterpart in the frequency-flat fading channels. In this paper, a new precoder with finite impulse response (FIR) structure is proposed for maximizing the throughput of frequency-selective MIMO channels under an average transmit power constraint....
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