Wireless Broadband Technologies: Comparison
Between Wimax, 3G,Wifi, And Lte Technologies
3. LTE (Long Term Evolution)
LTE, or long-term evolution, is a type of mobile broadband
that rivals WiMAX. Both services are IP-based and use a
technology called orthogonal frequency-division multiplexing
(OFDM) access. They also use a type of wireless technology
that lets people get high-speed Internet across coverage
areas that span miles.
The standard is maintained as a project of the 3rd
Generation Partnership Project (3GPP), operating under a
name trademarked by one of the associations within the partnership,
the European Telecommunications Standards Institute (ETSI).
The goal of LTE is to increase the capacity and speed
of wireless data networks utilizing cutting-edge hardware
and DSP techniques that have recently been developed. Its
wireless interface is incompatible with 2G and 3G networks,
and so it must be operated on separate wireless spectrum.
Features of LTE include an all-IP flat network architecture,
end-to-end QoS including provisions for low-latency communications,
peak download rates nearing 300 mbps and upload rates of
75 mbps, capacity exceeding 200 active users per cell, the
ability to manage fast-moving mobiles, and support for multi-cast
and broadcast streams.
a. WiMAX V/s Wi-Fi
WiMAX operates on the same general principles as Wi-Fi
- it sends data from one computer to another via radio signals.
A computer (either a desktop or a laptop) equipped with
WiMAX would receive data from the WiMAX transmitting station,
probably using encrypted data keys to prevent unauthorized
users from stealing access.