A parametric approach for low energy wireless data communication [mobile multimedia computing/communication applications]

In this paper, a joint control methodology of error protection capability and modulation strategy is presented to minimize the energy dissipation of a given communication. The communication energy includes the energy consumption of the underlying digital (channel encoder/decoder) and analog blocks including the RF amplifier. The energy dissipation of these blocks is determined by the system configuration parameters like channel coding rate, modulation order, transmission power and transmission duration. Simulation was performed on various channel qualities using the Nakagami channel model. The simulation results show that the jointly controlled communication system enhances energy efficiency. When the Nakagami fading figure is 6, 25% of the energy can be saved on average from a QPSK system with channel coding rate of 0.5. The configuration of the system should be determined considering channel quality (fading and path loss).