Communication Systems

Introduction
This book will eventually cover a large number of topics in the field of electrical communications. The reader will also require a knowledge of Time and Frequency Domain representations, which is covered in-depth in the Signals and Systems book. This book will, by necessity, touch on a number of different areas of study, and as such is more than just a text for aspiring Electrical Engineers. This book will discuss topics of analog communication schemes, computer programming, network architectures, information infrastructures, communications circuit analysis, and many other topics.

''This book is still in an early stage of development. Many topics do not yet have pages, and many of the current pages are stubs. Any help would be greatly appreciated.''

Table of Contents

 * /Communications Introduction/
 * /Communications History/

System Examples
This section will provide a brief overview of the more common communications systems in use today. The demarcation between these systems is quite artificial since a wireless VoIP Internet connection may be a combination of all of these individual systems.


 * /Telephone System/
 * /Cellular Systems/
 * /Packet Data Systems/
 * /Satellite Systems/
 * /Microwave Systems/
 * /Fiber Optic Systems/

Communications Basics
This section will examine some theory common to many communication systems. Examples are, what constitutes a signal, information, channels, multiplexing etc.


 * /Baseband and Broadband Signals/
 * /Time-Division Multiplexing/
 * /Frequency-Division Multiplexing/
 * /Voltage-Controlled Oscillators/ (VCO)
 * /Envelope Filters/ (Envelope Detectors)
 * /What is Modulation?/
 * /Analog vs. Digital/
 * /Communication Mediums/
 * /Coherent Receivers/

Analog Modulation
This section will examine the nature and conveyance of continuously varying information signals.


 * /Analog Modulation Introduction/
 * /Amplitude Modulation/ (AM)
 * /Frequency Modulation/ (FM)
 * /Phase Modulation/ (PM)
 * /FM and PM Generalization/
 * /AM Receivers/

Digital Modulation
This section considers the nature and encoding of discrete information signals.


 * /Pulse Amplitude Modulation/ (PAM)
 * /Binary Modulation Schemes/
 * /M-ary Modulation Schemes/
 * /Quadrature Amplitude Modulation/ (QAM)
 * /Noncoherent Receivers/
 * /Line Codes/

Transmission
This section examines various communications media and its characteristics. Any communication system may contain one or more of these media types.


 * /Wave Propagation/
 * /Antennas/
 * /Noise Figure/
 * /Wired Transmission/
 * /Wireless Transmission/
 * /Space-Division Multiplexing/
 * /Fading Channels/

Appendices

 * IEEE 802 Working Groups

Resources and Licensing

 * /Resources/
 * /Licensing/