DIGITAL FM DEMODULATION TECHNIQUES

Abstract

Digital systems have been heavily emphasized over the past decade because of their intrinsic trouble free operation, multiplexed signal handling capabilities, and the complex processing techniques possible through the use of small special and general purpose digital computers. The digital evolution has also allowed system cability to increase, while size, cost and power consumption decrease. Functions previously deemed impossible to implement are now being constructed in production facilities. When digital techniques are used for source encoding in a wide band communications network (such as two-way CATV), information is transmitted and received digitally with Small error probalility compared to analog signals, especially when carriers and media take the form of cable, laser beams and fiber optics where line repeaters are used in lieu of amplifiers.