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Saturday, 23 May 2015

FADING & INTER SYMBOL INTERFERENCE (ISI) IN WIRELESS COMMUNICATION


What is LOS ?
One to one communication Between Transmitter & Receiver is called Line of Sight .This is a Line of sight communication between two Cells A and B The Cell A transmitting and Cell B receiving the signal directly but keep in mind there is No hurdles or obstacles on the way.
 e.g Satellite and Microwave link communication is the best example of Los.

What is FADING ?
In real world it,s Hard to Achieve Los Communication between BTS and Mobile station a user must receive Reflected copy of the original signal from the ground there is other things which make a disturbance in our Communication such as Buildings,Moving Cars,Mountains,Birds, Aeroplane e.t.c
" To Receive Multiple copies of the Original signal with different time slots is called fading "

FADING & INTER SYMBOL INTERFERENCE (ISI) IN WIRELESS COMMUNICATION
FADING & INTER SYMBOL INTERFERENCE (ISI) IN WIRELESS COMMUNICATION


The Motor car Receiving Three Reflected copies of the original signal There is Multiple techniques that how to handle this problem sometime we use Equalizer to avoid ISI.



FADING & ISI IN WIRELESS COMMUNICATION 

ISI stands for INTER SYMBOL INTERFERENCE Whenever receiver receive the Same copy of the transmitted signal By different Reflector,s with different time slot due to fading  will create ISI and the Signal will be Overlap .
The Multiple Path create Delay on the Signal which may Spread and Move to the second region and affect the information of the second signal
I will tell you that how to remove ISI in my next article keep in touch with us ...Thanks
FADING & INTER SYMBOL INTERFERENCE (ISI) IN WIRELESS COMMUNICATION

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