A charge transfer recursive filter
William E. Engeler, Jerome J. Tiemann, R.D. Baertsch, Howard Goldberg · 1977
THE OPTIMUM PROCESS for identifying a signaling waveform in the presence of noise is correlation against a noise free version of itself. Frequently, a replica of the transmitted waveform can be used as a reference, but when the transmission channel is dispersive, a noise-free version of the received signal is required.