Somerealms of communication and their theories

universal communication Law: Universal Theory, Universal Theory
message production: Constructivist Theory, Action Assembly Theory
message processing: Elaboration Likelihood Model, Inoculation theory
discourse and interaction: Speech Acts Theory, Coordinated Management of Meaning
developing relationships: Uncertainty Reduction Theory, Social Penetration Theory
ongoing relationships: Relational Systems Theory, Relational Dialectics
organizational: Structuration Theory, Unobtrusive and Concertive Control Theory
small group: Functional Theory, Symbolic Convergence Theory
media processing and effects: Social Cognitive Theory, Uses and Gratifications Theory
media and society: Agenda Setting, Spiral of Silence, Symbolic Convergence Theory
culture: Speech Codes Theory, Face-saving Theory
making social worlds: Coordinated Management of Meaning

More information

The following list is a survey of Communication Theory texts:

Communication Theory: Epistemological Foundations by James A. Anderson
Communication Theories: Origins, Methods and Uses in the Mass Media (5th Edition) by Werner J. Severin and James W. Tankard
Theories of Human Communication (9th Edition) by Stephen W. Littlejohn and Karen A. Foss
Communication: Theories and Applications by Mark V. Redmond
Communication Theories: Perspectives, Processes, and Contexts by Katherine Miller
Communication Theory: Media, Technology and Society by David Holmes
Building Communication Theory by Dominic A. Infante, Andrew S. Rancer, and Deanna F. Womack
The Communication Theory Reader by Paul Cobley
Clarifying Communications Theories: A Hands-On Approach by Gerald Stone, Michael Singletary, and Virginia P. Richmond
An Introduction to Communication Theory by Don W. Stacks, Sidney R. Hill, and Mark, III Hickson
Scholarly journals are also a great source for recent research and academic discussion of

Analog and Digital Communication system

Analog and Digital communication systems

Analog Communication System
Analog communication is that types of communication in which the message or information signal i.e transmitted is analog in nature. This means that in analog communication the modulating signal (i.e base-band signal) is an analog signal. This analog message signal may be obtained from sources such as speech, video shooting etc.


Digital Communication System
In digital communication, the message signal to be transmitted is digital in nature. This means that digital communication involves the transmission of information in digital form.

Advantage of digital communication over analog communication system are
Increased immunity to channel noise and external interference.
Flexible operation of the system.
A common format for the transmission of different kinds of message signal (e.g voice signal, video signal , computer data ).
Improved security of communication through the use of encryption.

The advantage are attend however at the cost of increased transmission bandwidth and increased system complexity.

communications (used with a sing. or pl. verb)
The art and technique of using words effectively to impart information or ideas.
The field of study concerned with the transmission of information by various means, such as print or broadcasting.
Any of various professions involved with the transmission of information, such as advertising, broadcasting, or journalism.
Something communicated; a message.
communications A means of communicating, especially:
A system, such as mail, telephone, or television, for sending and receiving messages.
A network of routes for sending messages and transporting troops and supplies.
communications The technology employed in transmitting messages.

communication system - Communications is the field of study concerned with the transmission of information through various means. It can also be defined as technology employed in transmitting messages. It can also be defined as the inter-transmitting the content of data (speech, signals, pulses etc.) from one node to another.
A system or facility capable of providing information transfer between persons and equipment. The system usually consists of a collection of individual communication networks, transmission systems, relay stations, tributary stations, and terminal equipment capable of interconnection and interoperation so as to form an integrated whole. These individual components must serve a common purpose, be technically compatible, employ common procedures, respond to some form of control, and generally operate in unison.

Communication is divided in two types. They are

1. Analog Communication System

2.Digital Communication System

communication

Communication is a process of transferring information from one entity to another. Communication is commonly defined as "the imparting or interchange of thoughts, opinions, or information by speech, writing, or signs".