International Journal of Advanced Research in Computer and Communication Engineering (IJARCCE)
The 3G technologies and application have encountered obstacles that have stalled both the technology development and user acceptance. There are 2.4 billion internet users around the world, total continuous to grow apes. Mobile usage is expanding rapidly as a results of these trends, there is eager anticipation for introduction of mobile communications system that surpass existing once in speed, capacity, and coverage area. In this paper the authors described the WiMAX and LTE technologies with respect to features, architecture, standards, modulation techniques, protocols and security threats.