What is LTE ?

- LTE termed as Long Term Evolution or we also know it as 4G.
- Unlike other technologies 4G has also its predecessors. Which are
  2G and 3G.
- 2G and 3G are based on circuit switched technology resulting low 
  speed compared to 4G.

- Where as 4G is pure packet core based. So in simple terms other
  than browsing data through internet we can make calls also using
  data.
- Its architecture is less complex than its predecessors.
- It is completely IP based technology.

- LTE is based on OFDMA (Orthogonal Frequency Division Multiple
  Access) and in combination with higher order modulation (up to
  64QAM), large bandwidths (up to 20 MHz) and spatial multiplexing 
  in the downlink (up to 4x4) high data rates can be achieved. The 
  highest theoretical peak data rate on the transport channel is 75 
  Mbpsin the uplink, and in the downlink, using spatial 
  multiplexing, the rate can be as high as 300 Mbps.