21-08-2014, 03:39 PM
4G (Fourth Generation) also known as beyond 3G is a term used to describe the next complete evolution in wireless communications. In another context, 4G is simply an initiative by academic R&D labs to move beyond the limitations and problems of 3G which is having trouble getting deployed and meeting its promised performance and throughput. In reality, as of first half of 2002, 4G is a conceptual framework for or a discussion point to address future needs of a universal high speed wireless network that will interface with wireline backbone network seamlessly. 4G is also represents the hope and ideas of a group of researchers in Motorola, Qualcomm, Nokia, Ericsson, Sun, HP, NTT DoCoMo and other infrastructure vendors who must respond to the needs of MMS, multimedia and video applications if 3G never materializes in its full glory. A 4G system will be able to provide a comprehensive IP solution where voice, data and streamed multimedia can be given to users on an "Anytime, Anywhere" basis, and at higher data rates than previous generations. However, there are certain objectives that are projected for 4G. These objectives include: that 4G will be a fully IP based integrated system. 4G will be capable of providing between 100 Mbit/s and 1 Gbit/s speeds both indoors and outdoors, with premium quality and high security.
The seminar is dedicated towards the special features of 4G and advanced systems incorporated in it. It presented the motivation behind 4G and shows how researchers in WWRF led to the 4G standards. The seminar throws light on the 3GPP releases for 4G, OFDM technology which is the most prominent one in 4G, UMTS standards, MIMO smart antennas systems. The seminar also enlightens the most advanced standards of 4G i.e. LTE and LTE ADVANCED. Then the various challenges in 4G are put forth and future of 4G is discussed.