Fundamentals of Green Communications
We investigate the fundamental limits on minimum energy required to reliably communicate one unit of information. Knowing this theoretical bound will lead us in the design of new practical minimum-energy communication technologies and realization of significant energy savings over the current communication facilities. Furthermore, since CO2 forms more than 80% of the total volume of the greenhouse gases, we also explore the fundamental limits on CO2 footprint per Figure 2. Communication systems energy cycle symbol and/or per channel use between a transmitter and a receiver. By knowing this fundamental limit on CO2 emission, we will be able to develop a theoretical background for inherently green communication architectures and techniques with minimum contribution to greenhouse gas emission. Obtaining minimum energy bounds and deriving methods to achieve this bound will lead us the way to expand our findings to networking case and develop network topologies working at the edge of minimum energy consumption.