The basic overview of Communication Process Primary Communication resources Source of Information Communication Network

1. The basic overview of Communication
Process
Primary Communication resources
Source of Information
Communication Network
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Radio and TV Engineering Bangla
tutorial

2. The basic overview of Communication
Process:
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 Generation of massage signal
 Description of that massage signal
 Encoding
 Transmission
 Decoding
 Re creation of the original Massage

3. 3
There are two basic mode of communication:
1. Broad casting
 A single powerful transmitter transmits information to
numerous receiver
2. Point to point
 A single transmitter transmits information to a single
receiver

4. Primary Communication
resources:
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 Two Primary Resources
1. Transmitted power
2. Channel Bandwidth
 The Transmitted power is the average power of the
transmitted signal
 The bandwidth is the allocated frequencies for the
transmission of the massage signal.
 One important factor related to the communication
process is the NOISE.

5. Source of Information
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 Speech, music, picture, computer data
The overall signal can be divided into
1. One dimensional
2. Two dimensional
3. Three dimensional
4. Four dimensional
Speech:
Source: Human voice
This communication process involves with
Production
Propagation
Perception

6. 6
Music
Source: Musical Instrumentation
The note made by musical instrument can be
 Shot time interval
 Long time interval
Music instrument has two different type of structure
1. Melodic
2. Harmonic
Musical information requires wider bandwidth.
Picture:
Source: Human visual system

7. 7
 Picture can be Dynamic or Static.
 Bandwidth requirement is wide
Computer Data
Source : Personal computer, Smart devices
 In computer data communication the encoding is done
using ASCII (American Standard Code for Information
Interchange)
 Typical Data format for RS-232 Standard
 Wide Bandwidth is required.

8. Communication Network
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 Consist of interconnected routers
 These routers are intelligent in nature
 Two type of switching is used in a communication
network
 Circuit switching
 Packet switching
 Example of Communicati-
-on network:
 LAN
 Internet
 Broadband Network