Chiuso, Alessandro - Laurenti, Nicola - Schenato, Luca - Zanella, Andrea (2014) LQG control over communication channels: the role of data losses, delays and SNR limitations. [Rapporto tecnico] (Inedito)
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In this work we address the problem feedback control design in the presence of a blue communication channel, which gives rise to tightly coupled limitations in terms of quantization errors, decoding/computational delays and packet loss affecting the closed loop control performance. We restrict our analysis in the context of LQG control subject to SNR limitations, packet loss, and delay, and we derive their impact on optimal design for the controller parameters. In particular, we show that the stability of the closed loop system depends on a tradeoff among quantization, packet loss probability and delay. Through this analysis we are also able to recover, as special cases, several results already available in the literature that have treated packet loss, quantization error and delay separately.
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