Double-Sideband Suppressed-Carrier Multiplex Equipment for Cable and Microwave Applications

Single-sideband suppressed-carrier modulation has been the backbone system for telephone multichannel carrier equipment for many years. However, particularly in recent years, a number of other modulation systems have been applied in lesser or greater degrees, with the emergence of new problems in telephone transmission. These problems are related to economics, bulk of equipment, power consumption, phase distortion as it is related to data, etc.