DVB Network Optimisation for Energy Efficiency

Based on OFDM and Single Frequency Network architecture (SFN), DVB-T systems can combine signals coming from several transmitters yielding to a diversity gain. The network planning for such systems has a great impact to quality of service and costs. This paper presents a network planning approach for DVB-T services and focuses the investigation on the optimisation of the network deployment in terms of energy efficiency. For the purpose of the investigation an evolution optimisation technique based on genetic algorithm method is developed and applied on a given network topology over a real Digital Elevation Map (DEM). The field computations are based on an accurate multiple diffraction model based on multi-shape Uniform Theory of Diffraction (UTD). Simulation results show a great energy consumption savings that yield to the green deployment of the network. Comparisons with the coverage and cost optimisation scenarios are also presented.