Hybrid Digital Transmission Systems Part II: Information Rate of Hybrid Coaxial Cable Systems
01 October 1968
In Part I, 1 the general problem of optimizing the parameters in a hybrid (combination digital and analog) transmission system was considered. Closed form expressions were obtained for the transmitting, receiving, and analog repeater filters which would minimize the total mean square error at each digital regenerator. In this part these formulas are applied to the important special case where the transmission medium is coaxial cable, under the assumption that the additive repeater noise has a flat spectral density and that statistically in1687 1696 THE HELL SYSTEM TECHNICAL .JOURNAL, OCTOBER 1968 dependent message symbols are transmitted. No attempt was made to include practical details of circuit and filter design.