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Partial-Response Signaling Some of these disadvantages can be removed with partial-response signaling (PRS) (also known as correlative level coding) wherein the con- straint on waveforms is relaxed so as to allow a controlled amount of intersymbol interference
Partial response (PR) signaling Model – GaussianWaves The partial response signaling model, illustrated in Figure 2, is expressed as a cascaded combination of a tapped delay line filter with tap coefficients set to q n qn and a filter with frequency response G (f) G(f) The filter Q (f) Q(f) forces the desired sample values
partial_response. fm - University of Toronto • Accomplished by creating a receive trellis having branch metrics proportional to the difference squared between received signal and each ideal sym-bol value
Partial response signalling In partial response signalling, also called duobinary signalling or correlative coding, the idea is to introduce a controlled amount of ISI into the signal rather than trying to eliminate it completely