Name : Rowshanara ID : 1834902165

1. Assignment
On
Class Lecture-05
Course code : CSE – 313
Course name : Data communication
Submitted to
Pronab Bandhu Nath
Senior Lecturer
Department of CSE
City university
Submitted by
Name : Rowshanara
ID : 1834902165
Batch : 49th
(B)
Department of CSE

2. Submission date : 31/08/2021
Difference between Broad band and base
band:
Broad band :
• Used for Analog signal.
• Transmission is unidirectional in nature.
• Signals can be travelled over long distances
without being attenuated.
• It is used with a bus as well as tree topology.
• Only PSK encoding is used.
• Depends on ASK,FSK,PSK speed.
Base band:
• Used for Digital signal.
• Transmission is bidirectional in nature and it
provide binary value directly through Voltage.
• Signals can only travel over short distances.
• It works well with bus topology.
• In baseband transmission, Manchester and
Differential Manchester encoding are used.
Transmission impairment : Signals travel through
transmission media, which are not perfect. The imperfection
causes signal impairment. This means that the signal at the

3. beginning of the medium is not the same as the signal at the end
of the medium.
Types of Transmission impairment :
1. Attenuation.
2. Distortion.
3. Noise.
Attenuation : Attenuation is the loss of signal strength in
networking cables or connections.
Distortion : Distortion, one of the reasons of transmission
impairment, means a change in the shape of the received signal.

4. Noise : Noise Impairment occurs when an unwanted signal is
inserted between transmission and reception.