The fourth generation of mobile communications, to nobody’s surprise, offers extremely high downlink rates and in the case of Long Term Evolution (LTE), this can theoretically reach 100 MB per second. The question is; what is LTE technology all about?
Enter 4G with LTE
What makes LTE faster than other mobile communications technologies? The answer lies within the access technique employed by LTE. One the fastest access technique in use for LTE is orthogonal frequency division multiplexing (OFDM) which increases the amount of information that can be carried over a wireless network.
In frequency-division multiplexing (FDM), multiple signals, or carriers, are sent simultaneously over different frequencies between two points. In OFDM, a mathematical formula is used to ensure that multiple carriers sent out are orthogonal (separated by an angel, so they do not overlap) to each other. Another tool used by LTE is a multiple-input multiple-output (MIMO) antenna. These are adaptive antennas that can select the best coverage path in real time and accordingly propagate signals.
Transfer seamlessly with NFC
The main difference between NFC and Bluetooth communication is simply that the latter requires authentication and a series of steps before a connection is established. Hence, it takes time. NFC, which does not need to authenticate, can established a connection within one-tenth of a second.
