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The mobile story

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  1. Introduction
  2. Global System for Mobile Communication
  3. SIM (Subscriber's Identity Module)
  4. TDMA (Time Division Multiple Access) technology
  5. Using a GSM network
  6. CDMA (Code Division Multiple Access) technology
  7. 3G networks
  8. HSPA (High Speed Packet Access)
  9. Simplex, duplex and multiplex
  10. TDD and FDD
  11. Symmetric and asymmetric data transfer
  12. Bluetooth
  13. Mobile computing and smart phones
  14. Conclusion
  15. Bibliography

How did we ever manage without our cell phones? It is truly amazing to even think that there was a time not too long ago when we did not have our mobile handsets with us when we ventured out of our homes or offices. Let us try and demystify some of the technologies often related with our mobile phones that we get to hear often and understand very little of.

GSM or the Global System for Mobile Communication is the most widely adopted cellular phone standards across the world. It is estimated that more than 80% of the total mobile phones in the world use this particular technology. The GSM standard requires the mobile phone to search for a GSM network or in other words there must be a compatible cell in that particular locality in order to use the GSM standard. The GSM standards apply to cellular networks, which are networks that operate on radio frequencies and comprise of cells.

[...] Smart phones combine the features of a mobile phone and a computer and give high speed data connectivity using the Internet. Some examples of smart phones include Blackberry, the Nokia E Series range of phones, Apple phone, HTC Touch, Palm Pre etc. All these phones are loaded with features to help you keep connected and to help you work without losing valuable time. They all have specific operating systems installed and have basic spread sheet applications, applications for developing presentations and applications for creating text files. [...]


[...] The downside of CDMA is the fact that some countries such as China have banned it in order to establish a common standardized protocol in the area of mobile communications. 3G Networks Third generation of cellular technology, also known as 3G, has advanced features such as video phone and high speed internet connection. 3G technology was first introduced in Japan in 2001. Also known as International Mobile Telecommunications-2000 (IMT-2000), 3G or 3rd Generation, is a compilation of certain standards laid down for mobile communications by the International Telecommunications Union. [...]

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