A Peep into the most Revolutionizing Innovation of the modern era .doc --4G Mobile (Paper Presentation)

ABSTRACT: -

Mobile networks place a major role in these recent days. Different generations of mobile networks are coming one after another gradually with the advancement to previous generations. Till now we have seen 1st, 2nd, 3rd generations. Though 3 rd generations seems to be more successful some challenges it is facing to migrate to 4 th generation. With the rapid development of wireless communication networks, it is expected that fourth generation mobile systems will be launched within decades. 4G mobile systems focus on seamlessly integrating the existing wireless technologies including wireless LAN and Blue tooth. This contrasts with the 3G, which nearly focuses on developing new standards and hardware. 4G systems will not support comprehensive and personalized services, providing stable system performance and quality service. However migrating current systems to 4G present’s enormous challenges. This paper deals these challenges under the headings of mobile station, system, and service aspects. Proposed solutions to the research problems in each aspect will also be observed and examined.

INTRODUCTION: -

SECOND GENERATION (2G) mobile systems were successful in the previous decade. Their success prompted the development of THIRD GENERATION (3G) mobile systems. While 2G systems such as GSM, IS-95, and CDMAOne were designed to carry speech and low-bit-rate data, 3G systems were designed to provide higher-data-rate services. During the evolutions from 2G to 3G, a range of wireless systems, including GPRS, IMT-2000, BLUETOOTH, WLAN, and HIPER LAN, have been developed. All these systems were designed independently, targeting

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