1977 · 13 citations · 0 references
EngineeringCommunicationElectrical EngineeringCommunication TheoryDigital CommunicationDigital Signal ProcessingNoiseSignal Detection TheorySignal ProcessingNoise CorrelationsRecursive Digital FilteringRecursive FilterRecursive FilteringRecursive Signal Processing
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.