Optimum synthesis of multiport systems containing modulators with periodic carriers

THIS PAPER describes the development of a theory of optimum synthesis for a class of linear multiports, which are characterized by the presence of one or more periodically actuated switching elements (with finite dwell times), which multiplex the transmission channels, and by input signals that are generated by stationary random processes. The theory presented is also applicable to the problem of optimum synthesis of linear multiports in which periodic carriers of arbitrary waveshape are amplitude-modulated by the signals being processed; however, the multiplexing problem, in which the carriers are described by