Features of 4G Technology

With the deployment of 3G (3rd generation mobile communication systems) in process, the interest of many research bodies shifts towards future systems beyond 3G. They are called B3G (beyond 3G) or 4G (4th generation mobile communication). The term 4G is used broadly to include several types of broadband wireless access communication systems, not only cellular telephone systems.

OBJECTIVES
•4G will be a fully IP-based integrated system.
•Providing transfer rate between 100 Mbit/s to 1 Gbit/s speeds both indoors and outdoors.
•Premium quality and high security.
•Interoperability with existing wireless standards
Features of Fourth Generation Technology
•High performance
•Interoperability and easy roaming
•Fully converged services.
•Devices: more user friendly interface
•Enhanced GPS Services
•Scalability
•Crisis-Management applications
CHALLENGES IN MIGRATION TO 4G
•Multimode user terminals
•Security
•Attacks on application level
•Jamming and spoofing
•Data encryption
SCOPE IN 4G
•Multiple-input and multiple-output, or MIMO
•Orthogonal frequency-division multiplexing (OFDM)
•Software Defined Radio (SDR)