In this study, LTE which are candidates to provide technical requirements of 4G (Fourth Generation) networks are analyzed. The technical specifications for 4G are included in IMT Advanced which is announced by ITU (International Telecommunication Union). It is explained that LTE could not comply full requirement for 4G and it is expected LTE advanced will provide full requirements.In this study, technical specifications which are used by telecommunication provider in TS36.942 were used then LTE network is simulated in Matlab program according to these parameters. In simulation, the bandwidth, antenna techniques and channel types were set as variables and the system was simulated according to different bandwidth, channel types and multiple antennas. Then BLER and throughput were analyzed for different situation. The maximum throughput (approximately 60 Mbps) could be obtained in AWGN channel when the bandwidth is 20MHz and BLER is smaller than 10% which was acceptable. The results were also calculated according to Shannon capacity formula (approximately 70 Mbps) and it was seen that expected throughput for AWGN was obtained in simulator. In contrast to AWGN channel high throughput could not be obtained in other channel types which are Pedestrain and Rayleigh fading channell. It is thought that the following parameters decrease the throughput in these two channel types. Multiple Users (2) were tested in other two channel types that decreases throughput. Mobility and the characteristic of channel types also decreased throughput.In simulation, LTE recommended high data rate which is near to the target of 4G defined by ITU and also currently used LTE networks offer speeds in mobile broadband services between 20-80 Mbit/s with a maximum speed of 100 Mbit/s for 20 MHz bandwidth in 2.5GHz frequency so it could be expected that LTE Advanced will comply full requirements of IMT-Advanced systems.In conclusion, it is thought that LTE has become technology platform for 4G when it is compared to other competing technology, WiMAX. ITU (International Telecommunication Union) also confirmed LTE-Advanced as 4G in November 2010. Currently, nine telecommunication providers have already launched LTE in 2010 and an additional 11 expected before the end of the year. More than 250 companies have publicly expressed interest in deploying LTE networks, including CDMA, WiMAX and GSM operators. So that LTE is expected to be the leading choice for next-generation OFDMA networks over the next decade for all wireless carriers. |