Distribution Line Carrier Communications - An Historical Perspective

In this paper, the design migration since 1972 of the General Electric distribution line carrier systems is described, including such areas as coupling modes, frequency, harmonic noise, receiver filter design, standing waves, burst noise, error detection and correction. The research efforts of Rockwell International, beginning in 1977, are described, showing similarities and differences of that distribution line carrier system as compared to the General Electric systems. Communications success rates are described for the several system designs.