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Abstract:
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3rd Generation or 3G technologies like WCDMA , HSPA and GPRS are very advanced technologies in themselves . They allow data downlink speeds of up to 7Mbps and will soon be offering up to 14Mbps . The number of people using these networks has crossed 70 million users worldwide and with ever increasing users we need to provide a solution to handle the new and improved services which are being designed daily to work on mobile devices . Long Term Evolution (LTE ) , will be one of the two technologies which will meet the ITU's IMT -Advanced requirements for 4G technologies . 3G Partnership Project (3GPP ) is the organization behind the design and development of LTE . The design parameters for LTE included a system with higher data rates , low latency and high spectral efficiency . The design that was developed is said to have four times better performance figures than the previous technologies . To achieve these high numbers , LTE is based on Multiple Input Multiple Output (MIMO ) antenna technique , inter -cell interference mitigation , low latency structure , Single -Carrier Frequency Division Multiple Access (SC -FDMA ) and Single -Frequency Network (SFN ) Broadcast .In this research documents , we have paid close attention on how services like voice and MBMS have been brought to the users in LTE . Since LTE will be replacing the current telecommunication network , it is very important to see that Voice over LTE (VoLTE ) gives better results when comparing with the current telecommunication networks . Also , the high data rates allow many MBMS services to be streamed to the user . LTE also has inherent support for relay systems . In previous technologies , even with high data speeds and good coverage , the users at the cell edge suffered from poor service overall . We have analyzed the conditions that a UE will face when dealing with the new relay architectures . |