Sampling theory of bandlimited continuous-time graph signals

A continuous-time graph signal can be viewed as a continuous time-series of graph signals. It generalizes both the classical continuous-time signal and ordinary graph signal. In this paper, we consider the sampling theory of bandlimited continuous-time graph signals. We describe an explicit procedure to determine a discrete sampling set for perfect signal recovery. Moreover, in analogous to the Nyquist-Shannon sampling theorem, we give an explicit formula for the minimal sample rate.