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We consider a control loop which is closed over an additive noise communication channel. The quantity of interest is the Signal-to-Noise Ratio (SNR) of the channel such that control objectives like stabilization or minimal tracking error are met. We investigate a transmitter that uses observations of the plant output and the channel output which are fed back to the transmitter. Recently, a transmitter...
We consider a linear dynamic system to be controlled using feedback information that has to be transmitted over a power constrained channel with additive noise. We propose a novel approach to the transmitter design in order to minimize the cost function for the linear quadratic Gaussian (LQG) control problem when the standard state estimator and linear controller are used. We show that the well known...
Tomlinson-Harashima precoding (THP) for a system with multiple transmit antennas and non-cooperative receivers is considered (broadcast channel). Design of THP for this channel is typically based on complete CSI at the transmitter, which is not available in mobile wireless systems. For larger Doppler frequencies it even performs significantly worse than linear precoding or simple beamforming due to...
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