Introduction to Communications for AM and FM

Intro to AM and FM

1. INTRODUCTION
In essence, electronic communications is the transmission, reception,
and processing of information with the use of electronic circuits.
Information is defined as knowledge or intelligence that is
communicated between two or more points.
Digital modulation is the transmittal of digitally modulated analog
signals between two or more points in a communications system.
Digital modulation is sometimes called digital radio because
digitally modulated signals can be propagated through Earth’s
atmosphere and used in wireless communications systems.

2. INTRODUCTION
Traditional electronic communications systems that use
conventional analog modulation, such as amplitude modulation
(AM),frequency modulation (FM), and phase modulation (PM), are
rapidly being replaced with more modern digital modulation
systems that offer several outstanding advantages over traditional
analog systems, such as ease of processing, ease of multiplexing, and
noise immunity.