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arXiv 2004.03927eess.SYcs.SY
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带边信息高斯信道的LQG控制方案

Schemes for LQG Control over Gaussian Channels with Side Information

Omri Lev, Anatoly Khina

摘要:

我们考虑在功率受限的加性高斯白噪声(AWGN)信道上控制不稳定标量线性对象的问题,其中控制器/接收器可以获得控制系统状态的附加噪声测量。为此,我们将噪声测量视为边信息,并将问题转换为在接收端具有边信息的联合信源信道编码问题。我们认为,明智的基于模的计划改善了他们的线性同行,并允许避免由于在传感器/发射机的边信息的无知的发射功率的大幅增加。我们证明了我们的技术的设置,其中i)传感器是不经意的控制目标,控制动作和以前的控制器状态估计,ii)系统输出跟踪所需的参考信号,这是只有在控制器通过积分控制动作。

英文摘要:

We consider the problem of controlling an unstable scalar linear plant over a power-constrained additive white Gaussian noise (AWGN) channel, where the controller/receiver has access to an additional noisy measurement of the state of the control system. To that end, we view the noisy measurement as side information and recast the problem to that of joint source-channel coding with side information at the receiver. We argue that judicious modulo-based schemes improve over their linear counterparts and allow to avoid a large increase in the transmit power due to the ignorance of the side information at the sensor/transmitter. We demonstrate the usefulness of our technique for the settings where i) the sensor is oblivious of the control objectives, control actions and previous controller state estimates, ii) the system output tracks a desired reference signal that is available only at the controller via integral control action.

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