Generations of Mobile Communication

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Generations of Mobile Communication

  1. 1. BY- Bhomik Pandey Pranoy Prasad Kanika Singhal
  2. 3. <ul><li>1G (or 1-G) is short for first-generation wireless telephone technology, cellphones. </li></ul><ul><li>Uses digital signaling to connect the radio towers to the rest of the telephone system . </li></ul><ul><li>Uses analog signaling to communicate between the speakers. </li></ul><ul><li>The voice is modulated to higher frequency, typically 150MHz and up. </li></ul>
  3. 4. <ul><li>2G (or 2-G) is short for second-generation wireless </li></ul><ul><li>telephone technology. </li></ul><ul><li>Commercially launched on the GSM standard. </li></ul><ul><li>Three primary benefits of 2G networks : </li></ul><ul><li>1) Phone conversations were digitally encrypted. </li></ul><ul><li>2) More efficient on the spectrum allowing for far greater </li></ul><ul><li>mobile phone penetration levels. </li></ul><ul><li>3) Introduced data services for mobile, starting with SMS </li></ul><ul><li>text messages. </li></ul>
  4. 5. <ul><li>The lower powered radio signals require less battery power. </li></ul><ul><li>Digital error checking increased sound quality by increasing </li></ul><ul><li>dynamic range and lowering the noise floor. </li></ul><ul><li>The lower power emissions helped address health concerns. </li></ul><ul><li>Introduction of digital data services, such as SMS and email. </li></ul><ul><li>Greatly reduced fraud. </li></ul><ul><li>Enhanced privacy. Digital cellular calls are much harder to </li></ul><ul><li>eavesdrop on by use of radio scanners. </li></ul>
  5. 6. <ul><li>In less populous areas, the weaker digital signal may not </li></ul><ul><li>be sufficient to reach a cell tower. </li></ul><ul><li>Digital signal has a jagged steppy one and has occasional dropouts. </li></ul><ul><li>While digital calls tend to be free of static and background noise, the lossy compression used by the codecs takes a toll; the range of sound that they convey is reduced. </li></ul>
  6. 12. <ul><li>A fully IP-based integrated system. </li></ul><ul><li>Will be capable of providing between 100 Mbit/s and 1 Gbit/s speeds both indoors and outdoors. </li></ul><ul><li>Premium quality and high security. </li></ul>

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