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How mobile communication system work's??

                        Mobile communication system

            
           
In olden days the mobile is a luxury  item and used for phone calls only. the data speed is just 2KBPS.
But now mobile is necessary to everyone used in everywhere. the data speed is about 2GBPS.

Let's see how mobile communication system works.


In bottom of your mobile you can see the microphone inside the speaker grill.. while you're talking the voice go's inside the microphone and sent to small antenna which is top of your mobile. antenna converts voice signals into radio waves. when transmitting the signal it act as  transmitter and when receiving the signal same antenna act as receiver so it is called transducer.
    
Radio waves travel in straight line. while traveling radio waves  if there is an obstacles (buildings) in their path then radio waves decreases it's strength.
So cannot travel longer distance. to over come this tower's are provided.
Every tower radius as divided into hexagonal shapes.  few  towers are connected to mobile switching center (MSC)all the towers are interconnected through optical fiber cables.. this cables also connected between countries.

Mobile switching center.                                   

This mobile switching center have all the information about which  company phone number you are using  and your tower location whom you are calling.

For better understanding.  let's take an example                                                         
Think you are staying in Hyderabad and you want to call to your friend first the voice signals are converted into radio waves and  reach to near tower and then mobile switching center  (MSC) then it check your number, company SIM ,and also location, available balance using first  5 digits of your phone number. then connect to your friend mobile switching center this connect to your friend nearest tower.
Each phone number have specific frequency so when your are calling some one then it connect to that specific frequency only.
If you want to listen some one calls them simply identify the frequency of that number and make a receiver to match that frequency.
The receiver capacity of the signal depends upon the size of the antenna our mobile antenna can transmit over two kilometer  range if you have poor signal strength so more power used to connect to tower. if you have poor signal strength then mobile phone use less power. there are many antennas in our mobile like calling antenna ,GPS antenna, WIFI antenna, Bluetooth antenna .
Our body do not effect by the radio wave which produce by our mobile.....
Data speed 
In 2g=64kbps
3g=2mbps
4g=1gbps
5g=34gbps
In 5g we can watch HD quality videos without buffering .we can connect our home appliances to internet 
In mobile communications we use only optical fiber cables and towers.

What I explained till now about mobile communication. it just happen  in 1 sec this is the beauty of telecommunication.
 I hope you learn something new  in this article thank you.


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