Energy Efficient Transmission in Cellular Network using Time Reversal for Green Communication

In Recent decades evolution of information and communication technology has grown drastically due to the increased number of users every year. According to the statistics there are about 3.5 billion smart phone users worldwide (Statista 2019). Also, network coverage becomes an unavoidable factor. Thus, more number of base station has to be deployed to compensate for the demand. So, there is an increase in cost of energy and energy consumption, thus more maintenance and infrastructure of the network is required. Energy consumption of radioBase station in cellular network has to be concentrated more for efficient energy usage, since 70 % of energy is been utilized by radio base station in a cellular network. So Green "wireless communication is the efficient way to increase the energy efficiency so as to reduce the environmental impact. In this paper Time Reversal (TR) Technique is been proposed which makes its best effort in improving the base station energy efficiency. Time Reversal Technique that too communication-based exploits rich multipath propagation in both spatial and temporal focusing effects for high resolution. As an initial phase in this work we have contrasted TR transmission and direct transmission utilizing different modulation startegies such as Binary phase shift keying (BPSK)and Quadrature phase shift keying (QPSK) and simulated the result to show that Bit error rate (BER) is low for same Signal to Noise Ratio (SNR)when this TR technique is used.