Self study on First and Second Generation of Mobile Phones

Definition of 1G

1G is the first generation of mobile phones which provides first wireless

 

communication to the world. 1G uses the analog signal for voice
 

communications. The 1G analog signal communication was introduced in the year

1980 and was used until it got replaced by 2G.

 

The method that 1G used for dividing the channel capacity is FDMA (Frequency
 

Division Multiple Access). Each frequency retrieved using FDMA is used for the

individual call. The switching used by 1g to allow voice communication is circuit

switching.1G is built on the standards of MTS (Mobile Telephone System), AMPS

(Advanced Mobile Phone System), IMTS (Improved Mobile Telephone System).

1G do not allow data transmission; it was only comfortable in voice 

 

communication, which is one of the important drawbacks of 1G. The other

drawbacks that were limited channel capacity, unsecured communication,

poor voice quality, poor battery life, large size of 1G mobile phones. These

 

drawbacks were kept in mind while introducing 2G mobile phones.

 

 

Definition of 2G

2G is the second generation mobile phone that was introduced to replace 1G

mobile phones in the year 1993 at Finland. 2G has overcome many drawbacks of

1G mobile phones and also introduced some new features along with that. 2G

 

mobile phones used the digital signal for communication. Along with voice

communication 2G allows data communication.

To divide the channel capacity, the 2Gmobile phones uses TDMA (Time Division

Multiple Access) and CDMA (Code Division Multiple Access) methods. The

switching technique used by 2G mobile phones are Circuit Switching and Packet

Switching. 2G mobile phone were built on the standards of GSM (Global System

 

for Mobile communications).

 

The 2G mobile phone allows narrowband internet. The 2G mobile phone required

the strong digital signal to get worked so if there was a lack of network range

digital signal become weak resulting in a non-working condition of mobile phones.

 

The other disadvantage that came forward while using 2G is that it couldn’t

handle the complex type of data like videos. So to overcome the drawbacks of

 

2G, 3G was introduced later.

1G is the first and the oldest generation of mobile phone which was later replaced

by 2G. 2G is the advanced (digital) version of 1G and has overcome many of the

disadvantages of 1G.   

 

 

  

 

 

 

 

 

 

 

 

 

 

 

    

 

 

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