4GMohammad AbualreeshMohammad.Abualreesh@hut.fiOutline Introduction Definition, motivation, new… in 4G 3G vs. 4G Challenges & Needs 4G networks (Models, features, air interface) Industry Initiatives Transmission Technology Conclusion ReferencesEvolutionFigure 1 shows the evolution of wireless technologies. First Generation (1G): 1G wireless mobile communication systems, was introduced in the early 1980s. 1G wireless was analog and supported the first generation of analog cell phones. They include a signaling protocol known as SS7 (Signaling System 7).Second Generation (2G): 2G systems, fielded in thelate 1980s, were intended primarily for voice transmission and was all about digital PCS.EvolutionThird Generation (3G): 3G in wireless will be adeliberate migratio……