Improving Of Rate and Energy Efficiency in LTE Based OFDMA System with Multicarrier Base Stations

Mobile devices have become an integral part of our daily lives to stay connected to the world around us. In our recent research it has been proved that roughly 49% of traffic has been increased due to the fast growing requirement and development. Green communication technology has led to many energy-saving designs in mobile networks. Because it is necessary to minimize the dependence of communication networks on nonrenewable energy sources, considering the critical importance of communications in economic growth and national security. Recently, the term “Green Communications� has been marketed as a solution to addressing the growing cost and environmental impact of telecommunications. One component carrier (cc) at base station where the decrement of complexity is very less. To control energy consumption, more than one component carrier (CC) can now be jointly utilized in a base station (BS) to regularize the energy consumption. In this paper, a novel green rate-and-power control transmission scheme is therefore proposed for the BS transmission to address the problem of energy minimization at BS transceivers subject to certain quality-of-service and fairness requirements for all users. OFDMA based multi CCs with BS in downlink transmission are considered for analysis. Simulation results demonstrate that the energy consumption of the proposed novel energy-saving scheme is much better than that of existing schemes.