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Cars have to be painted in two colors in a sequence where each car occurs twice; assign the two colors to the two occurrences of each car so as to minimize the number of color changes. This problem is denoted by PPW(2, 1). This version and a more general version – with an arbitrary multiset of colors for each car – were proposed and studied for the first(More)
State-variable techniques have provided solutions to several problems in communication theory.1-3 In particular, the optimum receiver for the detection of Gaussian signals in Gaussian noise can be realized and its performance conveniently analyzed when the signal is modeled as the output of a finite-state system driven by white Gaussian noise. 2 When a(More)
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