Contiene: Time-domain representations for linear time-invariant systems. Fourier representations for signals. Applications of fourieer representations. Application to communication systems. Representation of signals using continuous-time complex exponentials: the laplace transform. Representation of signals using discrete-time complex exponentials: the z-transform. Application to filters and equalizers. Application to feedback systems. Epilogue. Selected mathematical identities. Partial fraction expansions. Tables of fourier representations and properties. Tables of fourier representations and properties. Tables of laplace transforms and properties. Table of z-transforms and properties.